64722318 has 8 divisors (see below), whose sum is σ = 129444648. Its totient is φ = 21574104.

The previous prime is 64722293. The next prime is 64722319. The reversal of 64722318 is 81322746.

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

64722318 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64722319) 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, 5393521 + ... + 5393532.

It is an arithmetic number, because the mean of its divisors is an integer number (16180581).

Almost surely, 2^64722318 is an apocalyptic number.

64722318 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.

64722318 is a wasteful number, since it uses less digits than its factorization.

64722318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10787058.

The product of its digits is 16128, while the sum is 33.

The square root of 64722318 is about 8045.0182100478. The cubic root of 64722318 is about 401.4992031216.

The spelling of 64722318 in words is "sixty-four million, seven hundred twenty-two thousand, three hundred eighteen".