64933938 has 24 divisors (see below), whose sum is σ = 142620348. Its totient is φ = 21347712.

The previous prime is 64933919. The next prime is 64933943. The reversal of 64933938 is 83933946.

It can be written as a sum of positive squares in 2 ways, for example, as 58568409 + 6365529 = 7653^2 + 2523^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64933893 and 64933902.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23395 + ... + 26022.

Almost surely, 2^64933938 is an apocalyptic number.

64933938 is an abundant number, since it is smaller than the sum of its proper divisors (77686410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64933938 is a wasteful number, since it uses less digits than its factorization.

64933938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49498 (or 49495 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 64933938 is about 8058.1597154685. The cubic root of 64933938 is about 401.9363157453.

The spelling of 64933938 in words is "sixty-four million, nine hundred thirty-three thousand, nine hundred thirty-eight".