64331013 has 8 divisors (see below), whose sum is σ = 86534208. Its totient is φ = 42507584.

The previous prime is 64331011. The next prime is 64331039. The reversal of 64331013 is 31013346.

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 64331013 - 2¹ = 64331011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331011) 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, 94545 + ... + 95222.

It is an arithmetic number, because the mean of its divisors is an integer number (10816776).

Almost surely, 2^64331013 is an apocalyptic number.

It is an amenable number.

64331013 is a deficient number, since it is larger than the sum of its proper divisors (22203195).

64331013 is a wasteful number, since it uses less digits than its factorization.

64331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189883.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 64331013 is about 8020.6616310626. The cubic root of 64331013 is about 400.6884249148.

Adding to 64331013 its reverse (31013346), we get a palindrome (95344359).

The spelling of 64331013 in words is "sixty-four million, three hundred thirty-one thousand, thirteen".