64240965 has 16 divisors (see below), whose sum is σ = 114206400. Its totient is φ = 34261776.

The previous prime is 64240961. The next prime is 64240993. The reversal of 64240965 is 56904246.

64240965 is a `hidden beast` number, since 642 + 4 + 0 + 9 + 6 + 5 = 666.

It is not a de Polignac number, because 64240965 - 2² = 64240961 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64240961) 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, 237795 + ... + 238064.

It is an arithmetic number, because the mean of its divisors is an integer number (7137900).

Almost surely, 2^64240965 is an apocalyptic number.

It is an amenable number.

64240965 is a deficient number, since it is larger than the sum of its proper divisors (49965435).

64240965 is a wasteful number, since it uses less digits than its factorization.

64240965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475873 (or 475867 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 64240965 is about 8015.0461633106. The cubic root of 64240965 is about 400.5013816951.

The spelling of 64240965 in words is "sixty-four million, two hundred forty thousand, nine hundred sixty-five".