669679000 has 32 divisors (see below), whose sum is σ = 1567051200. Its totient is φ = 267871200.

The previous prime is 669678967. The next prime is 669679007. The reversal of 669679000 is 976966.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669679007) 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, 333840 + ... + 335839.

It is an arithmetic number, because the mean of its divisors is an integer number (48970350).

Almost surely, 2^669679000 is an apocalyptic number.

It is an amenable number.

669679000 is an abundant number, since it is smaller than the sum of its proper divisors (897372200).

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

669679000 is a wasteful number, since it uses less digits than its factorization.

669679000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669700 (or 669686 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 669679000 is about 25878.1568122616. The cubic root of 669679000 is about 874.8942457222.

The spelling of 669679000 in words is "six hundred sixty-nine million, six hundred seventy-nine thousand".