64476418 has 4 divisors (see below), whose sum is σ = 96714630. Its totient is φ = 32238208.

The previous prime is 64476409. The next prime is 64476457. The reversal of 64476418 is 81467446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55398249 + 9078169 = 7443^2 + 3013^2 .

It is a super-2 number, since 2×64476418² = 8314416956221448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16119103 + ... + 16119106.

Almost surely, 2^64476418 is an apocalyptic number.

64476418 is a deficient number, since it is larger than the sum of its proper divisors (32238212).

64476418 is a wasteful number, since it uses less digits than its factorization.

64476418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32238211.

The product of its digits is 129024, while the sum is 40.

The square root of 64476418 is about 8029.7209166944. The cubic root of 64476418 is about 400.9900848082.

The spelling of 64476418 in words is "sixty-four million, four hundred seventy-six thousand, four hundred eighteen".