669625582 has 4 divisors (see below), whose sum is σ = 1004438376. Its totient is φ = 334812790.

The previous prime is 669625559. The next prime is 669625601. The reversal of 669625582 is 285526966.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167406394 + ... + 167406397.

It is an arithmetic number, because the mean of its divisors is an integer number (251109594).

Almost surely, 2^669625582 is an apocalyptic number.

669625582 is a deficient number, since it is larger than the sum of its proper divisors (334812794).

669625582 is a wasteful number, since it uses less digits than its factorization.

669625582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334812793.

The product of its digits is 1555200, while the sum is 49.

The square root of 669625582 is about 25877.1246857142. The cubic root of 669625582 is about 874.8709826646.

The spelling of 669625582 in words is "six hundred sixty-nine million, six hundred twenty-five thousand, five hundred eighty-two".