64722866349 has 8 divisors (see below), whose sum is σ = 86300232480. Its totient is φ = 43147038896.

The previous prime is 64722866323. The next prime is 64722866371. The reversal of 64722866349 is 94366822746.

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 64722866349 - 2¹¹ = 64722864301 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64722856349) 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, 282654 + ... + 457535.

It is an arithmetic number, because the mean of its divisors is an integer number (10787529060).

Almost surely, 2^64722866349 is an apocalyptic number.

It is an amenable number.

64722866349 is a deficient number, since it is larger than the sum of its proper divisors (21577366131).

64722866349 is a wasteful number, since it uses less digits than its factorization.

64722866349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769339.

The product of its digits is 20901888, while the sum is 57.

The spelling of 64722866349 in words is "sixty-four billion, seven hundred twenty-two million, eight hundred sixty-six thousand, three hundred forty-nine".