670724357 has 8 divisors (see below), whose sum is σ = 686952576. Its totient is φ = 654577792.

The previous prime is 670724347. The next prime is 670724359. The reversal of 670724357 is 753427076.

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

It is a cyclic number.

It is not a de Polignac number, because 670724357 - 2⁶ = 670724293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670724359) 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, 3623 + ... + 36804.

It is an arithmetic number, because the mean of its divisors is an integer number (85869072).

Almost surely, 2^670724357 is an apocalyptic number.

It is an amenable number.

670724357 is a deficient number, since it is larger than the sum of its proper divisors (16228219).

670724357 is a wasteful number, since it uses less digits than its factorization.

670724357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40827.

The product of its (nonzero) digits is 246960, while the sum is 41.

The square root of 670724357 is about 25898.3466074574. The cubic root of 670724357 is about 875.3492405068.

The spelling of 670724357 in words is "six hundred seventy million, seven hundred twenty-four thousand, three hundred fifty-seven".