670839544 has 8 divisors (see below), whose sum is σ = 1257824160. Its totient is φ = 335419768.

The previous prime is 670839541. The next prime is 670839557. The reversal of 670839544 is 445938076.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 670839494 and 670839503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670839541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41927464 + ... + 41927479.

It is an arithmetic number, because the mean of its divisors is an integer number (157228020).

Almost surely, 2^670839544 is an apocalyptic number.

It is an amenable number.

670839544 is a deficient number, since it is larger than the sum of its proper divisors (586984616).

670839544 is a wasteful number, since it uses less digits than its factorization.

670839544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83854949 (or 83854945 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 670839544 is about 25900.5703412106. The cubic root of 670839544 is about 875.3993470721.

The spelling of 670839544 in words is "six hundred seventy million, eight hundred thirty-nine thousand, five hundred forty-four".