64040613 has 32 divisors (see below), whose sum is σ = 108729600. Its totient is φ = 32610816.

The previous prime is 64040597. The next prime is 64040623. The reversal of 64040613 is 31604046.

It is not a de Polignac number, because 64040613 - 2⁴ = 64040597 is a prime.

It is a super-2 number, since 2×64040613² = 8202400226831538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64040623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3873 + ... + 11961.

It is an arithmetic number, because the mean of its divisors is an integer number (3397800).

Almost surely, 2^64040613 is an apocalyptic number.

It is an amenable number.

64040613 is a deficient number, since it is larger than the sum of its proper divisors (44688987).

64040613 is a wasteful number, since it uses less digits than its factorization.

64040613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 64040613 is about 8002.5379099383. The cubic root of 64040613 is about 400.0845925257.

Adding to 64040613 its reverse (31604046), we get a palindrome (95644659).

The spelling of 64040613 in words is "sixty-four million, forty thousand, six hundred thirteen".