64422788 has 12 divisors (see below), whose sum is σ = 112826112. Its totient is φ = 32186760.

The previous prime is 64422781. The next prime is 64422823. The reversal of 64422788 is 88722446.

It is a super-2 number, since 2×64422788² = 8300591227385888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64422781) 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, 533 + ... + 11363.

It is an arithmetic number, because the mean of its divisors is an integer number (9402176).

Almost surely, 2^64422788 is an apocalyptic number.

It is an amenable number.

64422788 is a deficient number, since it is larger than the sum of its proper divisors (48403324).

64422788 is a wasteful number, since it uses less digits than its factorization.

64422788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12322 (or 12320 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 64422788 is about 8026.3807534903. The cubic root of 64422788 is about 400.8788758621.

It can be divided in two parts, 644 and 22788, that added together give a palindrome (23432).

The spelling of 64422788 in words is "sixty-four million, four hundred twenty-two thousand, seven hundred eighty-eight".