64180013 has 4 divisors (see below), whose sum is σ = 66250368. Its totient is φ = 62109660.

The previous prime is 64180007. The next prime is 64180031. The reversal of 64180013 is 31008146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64180013 - 2⁸ = 64179757 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 (64180003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035131 + ... + 1035192.

It is an arithmetic number, because the mean of its divisors is an integer number (16562592).

Almost surely, 2^64180013 is an apocalyptic number.

It is an amenable number.

64180013 is a deficient number, since it is larger than the sum of its proper divisors (2070355).

64180013 is a wasteful number, since it uses less digits than its factorization.

64180013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070354.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 64180013 is about 8011.2429123077. The cubic root of 64180013 is about 400.3746760185.

Adding to 64180013 its reverse (31008146), we get a palindrome (95188159).

The spelling of 64180013 in words is "sixty-four million, one hundred eighty thousand, thirteen".