669276620 has 24 divisors (see below), whose sum is σ = 1439762688. Its totient is φ = 261180800.

The previous prime is 669276617. The next prime is 669276631. The reversal of 669276620 is 26672966.

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, 407276 + ... + 408915.

It is an arithmetic number, because the mean of its divisors is an integer number (59990112).

Almost surely, 2^669276620 is an apocalyptic number.

It is an amenable number.

669276620 is an abundant number, since it is smaller than the sum of its proper divisors (770486068).

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

669276620 is a wasteful number, since it uses less digits than its factorization.

669276620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816241 (or 816239 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 669276620 is about 25870.3811336439. The cubic root of 669276620 is about 874.7189824103.

The spelling of 669276620 in words is "six hundred sixty-nine million, two hundred seventy-six thousand, six hundred twenty".