64774039 has 8 divisors (see below), whose sum is σ = 72306432. Its totient is φ = 57515640.

The previous prime is 64774033. The next prime is 64774057. The reversal of 64774039 is 93047746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64774039 - 2¹¹ = 64771991 is a prime.

It is a super-2 number, since 2×64774039² = 8391352256747042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64773992 and 64774010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64774033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67999 + ... + 68944.

It is an arithmetic number, because the mean of its divisors is an integer number (9038304).

Almost surely, 2^64774039 is an apocalyptic number.

64774039 is a deficient number, since it is larger than the sum of its proper divisors (7532393).

64774039 is a wasteful number, since it uses less digits than its factorization.

64774039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136997.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 64774039 is about 8048.2320418835. The cubic root of 64774039 is about 401.6061235363.

The spelling of 64774039 in words is "sixty-four million, seven hundred seventy-four thousand, thirty-nine".