64416674 has 12 divisors (see below), whose sum is σ = 112400694. Its totient is φ = 27607104.

The previous prime is 64416673. The next prime is 64416691. The reversal of 64416674 is 47661446.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 9878449 = 7385^2 + 3143^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64416673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328559 + ... + 328754.

Almost surely, 2^64416674 is an apocalyptic number.

64416674 is a deficient number, since it is larger than the sum of its proper divisors (47984020).

64416674 is a wasteful number, since it uses less digits than its factorization.

64416674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657329 (or 657322 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 64416674 is about 8025.9998754049. Note that the first 3 decimals coincide. The cubic root of 64416674 is about 400.8661937503.

The spelling of 64416674 in words is "sixty-four million, four hundred sixteen thousand, six hundred seventy-four".