64493402 has 16 divisors (see below), whose sum is σ = 97827912. Its totient is φ = 31886400.

The previous prime is 64493399. The next prime is 64493413. The reversal of 64493402 is 20439446.

It can be written as a sum of positive squares in 4 ways, for example, as 64464841 + 28561 = 8029^2 + 169^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91652 + ... + 92352.

Almost surely, 2^64493402 is an apocalyptic number.

64493402 is a deficient number, since it is larger than the sum of its proper divisors (33334510).

64493402 is a wasteful number, since it uses less digits than its factorization.

64493402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64493402 is about 8030.7784180614. The cubic root of 64493402 is about 401.0252905362.

The spelling of 64493402 in words is "sixty-four million, four hundred ninety-three thousand, four hundred two".