669552998 has 8 divisors (see below), whose sum is σ = 1004591808. Its totient is φ = 334689064.

The previous prime is 669552997. The next prime is 669553021. The reversal of 669552998 is 899255966.

669552998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669552991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33686 + ... + 49737.

It is an arithmetic number, because the mean of its divisors is an integer number (125573976).

Almost surely, 2^669552998 is an apocalyptic number.

669552998 is a deficient number, since it is larger than the sum of its proper divisors (335038810).

669552998 is a wasteful number, since it uses less digits than its factorization.

669552998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87438.

The product of its digits is 10497600, while the sum is 59.

The square root of 669552998 is about 25875.7221734969. The cubic root of 669552998 is about 874.8393710040.

The spelling of 669552998 in words is "six hundred sixty-nine million, five hundred fifty-two thousand, nine hundred ninety-eight".