64397422 has 16 divisors (see below), whose sum is σ = 101888640. Its totient is φ = 30441528.

The previous prime is 64397419. The next prime is 64397477. The reversal of 64397422 is 22479346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20863 + ... + 23749.

It is an arithmetic number, because the mean of its divisors is an integer number (6368040).

Almost surely, 2^64397422 is an apocalyptic number.

64397422 is a deficient number, since it is larger than the sum of its proper divisors (37491218).

64397422 is a wasteful number, since it uses less digits than its factorization.

64397422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495.

The product of its digits is 72576, while the sum is 37.

The square root of 64397422 is about 8024.8004336557. The cubic root of 64397422 is about 400.8262545832.

It can be divided in two parts, 6439 and 7422, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 64397422 in words is "sixty-four million, three hundred ninety-seven thousand, four hundred twenty-two".