1064615865 has 16 divisors (see below), whose sum is σ = 1706272128. Its totient is φ = 566832896.

The previous prime is 1064615861. The next prime is 1064615869. The reversal of 1064615865 is 5685164601.

It is an interprime number because it is at equal distance from previous prime (1064615861) and next prime (1064615869).

It is a cyclic number.

It is not a de Polignac number, because 1064615865 - 2² = 1064615861 is a prime.

It is a super-2 number, since 2×1064615865² = 2266813880019396450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064615861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50949 + ... + 68738.

It is an arithmetic number, because the mean of its divisors is an integer number (106642008).

Almost surely, 2^1064615865 is an apocalyptic number.

1064615865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1064615865 is a deficient number, since it is larger than the sum of its proper divisors (641656263).

1064615865 is a wasteful number, since it uses less digits than its factorization.

1064615865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120288.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1064615865 is about 32628.4517714218. The cubic root of 1064615865 is about 1021.0906778142.

The spelling of 1064615865 in words is "one billion, sixty-four million, six hundred fifteen thousand, eight hundred sixty-five".