669276572 has 24 divisors (see below), whose sum is σ = 1205746080. Its totient is φ = 324820800.

The previous prime is 669276551. The next prime is 669276583. The reversal of 669276572 is 275672966.

It is a happy number.

It is a super-2 number, since 2×669276572² = 895862259656142368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 669276572.

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, 59822 + ... + 70122.

It is an arithmetic number, because the mean of its divisors is an integer number (50239420).

Almost surely, 2^669276572 is an apocalyptic number.

It is an amenable number.

669276572 is a deficient number, since it is larger than the sum of its proper divisors (536469508).

669276572 is a wasteful number, since it uses less digits than its factorization.

669276572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10781 (or 10779 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 50.

The square root of 669276572 is about 25870.3802059421. The cubic root of 669276572 is about 874.7189614989.

The spelling of 669276572 in words is "six hundred sixty-nine million, two hundred seventy-six thousand, five hundred seventy-two".