669656592 has 240 divisors, whose sum is σ = 2208608640. Its totient is φ = 193754880.

The previous prime is 669656579. The next prime is 669656627. The reversal of 669656592 is 295656966.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1201978 + ... + 1202534.

It is an arithmetic number, because the mean of its divisors is an integer number (9202536).

Almost surely, 2^669656592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669656592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104304320).

669656592 is an abundant number, since it is smaller than the sum of its proper divisors (1538952048).

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

669656592 is a wasteful number, since it uses less digits than its factorization.

669656592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 596 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The square root of 669656592 is about 25877.7238566300. The cubic root of 669656592 is about 874.8844873908.

The spelling of 669656592 in words is "six hundred sixty-nine million, six hundred fifty-six thousand, five hundred ninety-two".