64722529 has 8 divisors (see below), whose sum is σ = 67617792. Its totient is φ = 61834080.

The previous prime is 64722527. The next prime is 64722533. The reversal of 64722529 is 92522746.

It is a happy number.

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 64722529 - 2¹ = 64722527 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64722527) 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, 32877 + ... + 34789.

It is an arithmetic number, because the mean of its divisors is an integer number (8452224).

Almost surely, 2^64722529 is an apocalyptic number.

It is an amenable number.

64722529 is a deficient number, since it is larger than the sum of its proper divisors (2895263).

64722529 is a wasteful number, since it uses less digits than its factorization.

64722529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407.

The product of its digits is 60480, while the sum is 37.

The square root of 64722529 is about 8045.0313237426. The cubic root of 64722529 is about 401.4996394278.

The spelling of 64722529 in words is "sixty-four million, seven hundred twenty-two thousand, five hundred twenty-nine".