64738013 has 16 divisors (see below), whose sum is σ = 68935680. Its totient is φ = 60706800.

The previous prime is 64737991. The next prime is 64738021. The reversal of 64738013 is 31083746.

It is a cyclic number.

It is not a de Polignac number, because 64738013 - 2⁶ = 64737949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64738033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147248 + ... + 147686.

It is an arithmetic number, because the mean of its divisors is an integer number (4308480).

Almost surely, 2^64738013 is an apocalyptic number.

It is an amenable number.

64738013 is a deficient number, since it is larger than the sum of its proper divisors (4197667).

64738013 is a wasteful number, since it uses less digits than its factorization.

64738013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 64738013 is about 8045.9935993015. The cubic root of 64738013 is about 401.5316546823.

The spelling of 64738013 in words is "sixty-four million, seven hundred thirty-eight thousand, thirteen".