670724346 has 8 divisors (see below), whose sum is σ = 1341448704. Its totient is φ = 223574780.

The previous prime is 670724317. The next prime is 670724347. The reversal of 670724346 is 643427076.

It is a sphenic number, since it is the product of 3 distinct primes.

670724346 is an admirable number.

It is a super-2 number, since 2×670724346² = 899742296634255432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (670724347) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 55893690 + ... + 55893701.

It is an arithmetic number, because the mean of its divisors is an integer number (167681088).

Almost surely, 2^670724346 is an apocalyptic number.

670724346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

670724346 is a wasteful number, since it uses less digits than its factorization.

670724346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111787396.

The product of its (nonzero) digits is 169344, while the sum is 39.

The square root of 670724346 is about 25898.3463950886. The cubic root of 670724346 is about 875.3492357215.

The spelling of 670724346 in words is "six hundred seventy million, seven hundred twenty-four thousand, three hundred forty-six".