63992465 has 16 divisors (see below), whose sum is σ = 78969168. Its totient is φ = 49760256.

The previous prime is 63992459. The next prime is 63992479. The reversal of 63992465 is 56429936.

It can be written as a sum of positive squares in 8 ways, for example, as 18524416 + 45468049 = 4304^2 + 6743^2 .

It is a cyclic number.

It is not a de Polignac number, because 63992465 - 2¹⁰ = 63991441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28877 + ... + 31013.

It is an arithmetic number, because the mean of its divisors is an integer number (4935573).

Almost surely, 2^63992465 is an apocalyptic number.

It is an amenable number.

63992465 is a deficient number, since it is larger than the sum of its proper divisors (14976703).

63992465 is a wasteful number, since it uses less digits than its factorization.

63992465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308.

The product of its digits is 349920, while the sum is 44.

The square root of 63992465 is about 7999.5290486378. The cubic root of 63992465 is about 399.9843014672.

The spelling of 63992465 in words is "sixty-three million, nine hundred ninety-two thousand, four hundred sixty-five".