64516722 has 8 divisors (see below), whose sum is σ = 129033456. Its totient is φ = 21505572.

The previous prime is 64516721. The next prime is 64516729. The reversal of 64516722 is 22761546.

It is a sphenic number, since it is the product of 3 distinct primes.

64516722 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (64516721) 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, 5376388 + ... + 5376399.

It is an arithmetic number, because the mean of its divisors is an integer number (16129182).

Almost surely, 2^64516722 is an apocalyptic number.

64516722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64516722 is a wasteful number, since it uses less digits than its factorization.

64516722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10752792.

The product of its digits is 20160, while the sum is 33.

The square root of 64516722 is about 8032.2302008844. The cubic root of 64516722 is about 401.0736199391.

It can be divided in two parts, 645 and 16722, that multiplied together give a triangular number (10785690 = T₄₆₄₄).

The spelling of 64516722 in words is "sixty-four million, five hundred sixteen thousand, seven hundred twenty-two".