669350028 has 48 divisors (see below), whose sum is σ = 1587204864. Its totient is φ = 219518400.

The previous prime is 669350023. The next prime is 669350029. The reversal of 669350028 is 820053966.

It is not an unprimeable number, because it can be changed into a prime (669350023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200751 + ... + 204057.

It is an arithmetic number, because the mean of its divisors is an integer number (33066768).

Almost surely, 2^669350028 is an apocalyptic number.

It is an amenable number.

669350028 is an abundant number, since it is smaller than the sum of its proper divisors (917854836).

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

669350028 is a wasteful number, since it uses less digits than its factorization.

669350028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3580 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 669350028 is about 25871.7998600793. The cubic root of 669350028 is about 874.7509617253.

The spelling of 669350028 in words is "six hundred sixty-nine million, three hundred fifty thousand, twenty-eight".