669801044 has 24 divisors (see below), whose sum is σ = 1280084736. Its totient is φ = 304128000.

The previous prime is 669801043. The next prime is 669801049. The reversal of 669801044 is 440108966.

It is a junction number, because it is equal to n+sod(n) for n = 669800989 and 669801007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669801043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35924 + ... + 51284.

It is an arithmetic number, because the mean of its divisors is an integer number (53336864).

Almost surely, 2^669801044 is an apocalyptic number.

It is an amenable number.

669801044 is a deficient number, since it is larger than the sum of its proper divisors (610283692).

669801044 is a wasteful number, since it uses less digits than its factorization.

669801044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16367 (or 16365 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 669801044 is about 25880.5147553135. The cubic root of 669801044 is about 874.9473901430.

The spelling of 669801044 in words is "six hundred sixty-nine million, eight hundred one thousand, forty-four".