64499265 has 24 divisors (see below), whose sum is σ = 113636328. Its totient is φ = 33834240.

The previous prime is 64499257. The next prime is 64499297. The reversal of 64499265 is 56299446.

It can be written as a sum of positive squares in 4 ways, for example, as 1962801 + 62536464 = 1401^2 + 7908^2 .

It is not a de Polignac number, because 64499265 - 2³ = 64499257 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64499265.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9004 + ... + 14493.

It is an arithmetic number, because the mean of its divisors is an integer number (4734847).

Almost surely, 2^64499265 is an apocalyptic number.

It is an amenable number.

64499265 is a deficient number, since it is larger than the sum of its proper divisors (49137063).

64499265 is a wasteful number, since it uses less digits than its factorization.

64499265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23569 (or 23566 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 64499265 is about 8031.1434428729. The cubic root of 64499265 is about 401.0374423737.

The spelling of 64499265 in words is "sixty-four million, four hundred ninety-nine thousand, two hundred sixty-five".