1065615650 has 48 divisors (see below), whose sum is σ = 2183753088. Its totient is φ = 383640000.

The previous prime is 1065615647. The next prime is 1065615653. The reversal of 1065615650 is 565165601.

It is an interprime number because it is at equal distance from previous prime (1065615647) and next prime (1065615653).

It is a super-2 number, since 2×1065615650² = 2271073427049845000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065615650.

It is not an unprimeable number, because it can be changed into a prime (1065615653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45959 + ... + 65141.

It is an arithmetic number, because the mean of its divisors is an integer number (45494856).

Almost surely, 2^1065615650 is an apocalyptic number.

1065615650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1065615650 is an abundant number, since it is smaller than the sum of its proper divisors (1118137438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1065615650 is a wasteful number, since it uses less digits than its factorization.

1065615650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19307 (or 19302 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1065615650 is about 32643.7689306857. The cubic root of 1065615650 is about 1021.4102145834.

It can be divided in two parts, 106561 and 5650, that added together give a palindrome (112211).

The spelling of 1065615650 in words is "one billion, sixty-five million, six hundred fifteen thousand, six hundred fifty".