64722413 has 8 divisors (see below), whose sum is σ = 74056320. Its totient is φ = 55410480.

The previous prime is 64722407. The next prime is 64722421. The reversal of 64722413 is 31422746.

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 64722413 - 2¹² = 64718317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64722433) 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, 1403 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (9257040).

Almost surely, 2^64722413 is an apocalyptic number.

It is an amenable number.

64722413 is a deficient number, since it is larger than the sum of its proper divisors (9333907).

64722413 is a wasteful number, since it uses less digits than its factorization.

64722413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10987.

The product of its digits is 8064, while the sum is 29.

The square root of 64722413 is about 8045.0241143206. The cubic root of 64722413 is about 401.4993995629.

The spelling of 64722413 in words is "sixty-four million, seven hundred twenty-two thousand, four hundred thirteen".