670988404 has 6 divisors (see below), whose sum is σ = 1174229714. Its totient is φ = 335494200.

The previous prime is 670988393. The next prime is 670988431. The reversal of 670988404 is 404889076.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 432224100 + 238764304 = 20790^2 + 15452^2 .

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, 83873547 + ... + 83873554.

Almost surely, 2^670988404 is an apocalyptic number.

It is an amenable number.

670988404 is a deficient number, since it is larger than the sum of its proper divisors (503241310).

670988404 is a wasteful number, since it uses less digits than its factorization.

670988404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167747105 (or 167747103 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 670988404 is about 25903.4438637028. The cubic root of 670988404 is about 875.4640929618.

The spelling of 670988404 in words is "six hundred seventy million, nine hundred eighty-eight thousand, four hundred four".