669542002 has 8 divisors (see below), whose sum is σ = 1004637312. Its totient is φ = 334662900.

The previous prime is 669541997. The next prime is 669542051. The reversal of 669542002 is 200245966.

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

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, 46074 + ... + 58837.

It is an arithmetic number, because the mean of its divisors is an integer number (125579664).

Almost surely, 2^669542002 is an apocalyptic number.

669542002 is a deficient number, since it is larger than the sum of its proper divisors (335095310).

669542002 is a wasteful number, since it uses less digits than its factorization.

669542002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108104.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 669542002 is about 25875.5096954630. The cubic root of 669542002 is about 874.8345818454.

Adding to 669542002 its reverse (200245966), we get a palindrome (869787968).

The spelling of 669542002 in words is "six hundred sixty-nine million, five hundred forty-two thousand, two".