664529822 has 24 divisors (see below), whose sum is σ = 1098846000. Its totient is φ = 301178240.

The previous prime is 664529797. The next prime is 664529837. The reversal of 664529822 is 228925466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83054 + ... + 90702.

It is an arithmetic number, because the mean of its divisors is an integer number (45785250).

Almost surely, 2^664529822 is an apocalyptic number.

664529822 is a deficient number, since it is larger than the sum of its proper divisors (434316178).

664529822 is a wasteful number, since it uses less digits than its factorization.

664529822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8032 (or 8021 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 664529822 is about 25778.4759440895. The cubic root of 664529822 is about 872.6461128632.

The spelling of 664529822 in words is "six hundred sixty-four million, five hundred twenty-nine thousand, eight hundred twenty-two".