64129513 has 8 divisors (see below), whose sum is σ = 74047232. Its totient is φ = 54400896.

The previous prime is 64129501. The next prime is 64129529. The reversal of 64129513 is 31592146.

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 64129513 - 2⁹ = 64129001 is a prime.

It is a super-2 number, since 2×64129513² = 8225188875234338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64129553) 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, 46545 + ... + 47902.

It is an arithmetic number, because the mean of its divisors is an integer number (9255904).

Almost surely, 2^64129513 is an apocalyptic number.

It is an amenable number.

64129513 is a deficient number, since it is larger than the sum of its proper divisors (9917719).

64129513 is an equidigital number, since it uses as much as digits as its factorization.

64129513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94551.

The product of its digits is 6480, while the sum is 31.

The square root of 64129513 is about 8008.0904715169. The cubic root of 64129513 is about 400.2696369489.

The spelling of 64129513 in words is "sixty-four million, one hundred twenty-nine thousand, five hundred thirteen".