670345751 has 8 divisors (see below), whose sum is σ = 715368960. Its totient is φ = 625943808.

The previous prime is 670345747. The next prime is 670345769. The reversal of 670345751 is 157543076.

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

It is not a de Polignac number, because 670345751 - 2² = 670345747 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 (670345721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153086 + ... + 157403.

It is an arithmetic number, because the mean of its divisors is an integer number (89421120).

Almost surely, 2^670345751 is an apocalyptic number.

670345751 is a deficient number, since it is larger than the sum of its proper divisors (45023209).

670345751 is a wasteful number, since it uses less digits than its factorization.

670345751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310633.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 670345751 is about 25891.0361129098. The cubic root of 670345751 is about 875.1845057448.

The spelling of 670345751 in words is "six hundred seventy million, three hundred forty-five thousand, seven hundred fifty-one".