670012257 has 16 divisors (see below), whose sum is σ = 941784320. Its totient is φ = 422528400.

The previous prime is 670012253. The next prime is 670012327. The reversal of 670012257 is 752210076.

It is not a de Polignac number, because 670012257 - 2² = 670012253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670012253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30882 + ... + 47892.

It is an arithmetic number, because the mean of its divisors is an integer number (58861520).

Almost surely, 2^670012257 is an apocalyptic number.

It is an amenable number.

670012257 is a deficient number, since it is larger than the sum of its proper divisors (271772063).

670012257 is a wasteful number, since it uses less digits than its factorization.

670012257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724.

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

The square root of 670012257 is about 25884.5949746176. The cubic root of 670012257 is about 875.0393482169.

The spelling of 670012257 in words is "six hundred seventy million, twelve thousand, two hundred fifty-seven".