670400751 has 8 divisors (see below), whose sum is σ = 895578880. Its totient is φ = 446078232.

The previous prime is 670400741. The next prime is 670400779. The reversal of 670400751 is 157004076.

It is a happy number.

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

It is not a de Polignac number, because 670400751 - 2⁵ = 670400719 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 (670400741) 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, 212071 + ... + 215208.

It is an arithmetic number, because the mean of its divisors is an integer number (111947360).

Almost surely, 2^670400751 is an apocalyptic number.

670400751 is a deficient number, since it is larger than the sum of its proper divisors (225178129).

670400751 is a wasteful number, since it uses less digits than its factorization.

670400751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427805.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 670400751 is about 25892.0982347897. The cubic root of 670400751 is about 875.2084405731.

The spelling of 670400751 in words is "six hundred seventy million, four hundred thousand, seven hundred fifty-one".