64113013 has 8 divisors (see below), whose sum is σ = 65292696. Its totient is φ = 62937600.

The previous prime is 64112981. The next prime is 64113031. The reversal of 64113013 is 31031146.

It can be written as a sum of positive squares in 4 ways, for example, as 400689 + 63712324 = 633^2 + 7982^2 .

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 64113013 - 2⁵ = 64112981 is a prime.

It is a super-2 number, since 2×64113013² = 8220956871876338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64113073) 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, 53145 + ... + 54337.

It is an arithmetic number, because the mean of its divisors is an integer number (8161587).

Almost surely, 2^64113013 is an apocalyptic number.

It is an amenable number.

64113013 is a deficient number, since it is larger than the sum of its proper divisors (1179683).

64113013 is a wasteful number, since it uses less digits than its factorization.

64113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 64113013 is about 8007.0601971011. The cubic root of 64113013 is about 400.2353053014.

Adding to 64113013 its reverse (31031146), we get a palindrome (95144159).

The spelling of 64113013 in words is "sixty-four million, one hundred thirteen thousand, thirteen".