669227756 has 12 divisors (see below), whose sum is σ = 1171607640. Its totient is φ = 334482720.

The previous prime is 669227749. The next prime is 669227777. The reversal of 669227756 is 657722966.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20825 + ... + 42096.

It is an arithmetic number, because the mean of its divisors is an integer number (97633970).

Almost surely, 2^669227756 is an apocalyptic number.

It is an amenable number.

669227756 is a deficient number, since it is larger than the sum of its proper divisors (502379884).

669227756 is a wasteful number, since it uses less digits than its factorization.

669227756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65584 (or 65582 counting only the distinct ones).

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

The square root of 669227756 is about 25869.4367159395. The cubic root of 669227756 is about 874.6976940982.

The spelling of 669227756 in words is "six hundred sixty-nine million, two hundred twenty-seven thousand, seven hundred fifty-six".