1046863665 has 48 divisors (see below), whose sum is σ = 1859539968. Its totient is φ = 544572288.

The previous prime is 1046863651. The next prime is 1046863679. The reversal of 1046863665 is 5663686401.

1046863665 is a `hidden beast` number, since 1 + 0 + 4 + 6 + 8 + 636 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1046863651) and next prime (1046863679).

It is not a de Polignac number, because 1046863665 - 2⁵ = 1046863633 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1046863665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 788232 + ... + 789558.

It is an arithmetic number, because the mean of its divisors is an integer number (38740416).

Almost surely, 2^1046863665 is an apocalyptic number.

1046863665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1046863665 is a deficient number, since it is larger than the sum of its proper divisors (812676303).

1046863665 is a wasteful number, since it uses less digits than its factorization.

1046863665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 1046863665 is about 32355.2725996861. The cubic root of 1046863665 is about 1015.3833604098.

The spelling of 1046863665 in words is "one billion, forty-six million, eight hundred sixty-three thousand, six hundred sixty-five".