670457 has 2 divisors, whose sum is σ = 670458. Its totient is φ = 670456.

The previous prime is 670447. The next prime is 670471. The reversal of 670457 is 754076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383161 + 287296 = 619^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 670457 - 2¹⁰ = 669433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335228 + 335229.

It is an arithmetic number, because the mean of its divisors is an integer number (335229).

2⁶⁷⁰⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

670457 is a deficient number, since it is larger than the sum of its proper divisors (1).

670457 is an equidigital number, since it uses as much as digits as its factorization.

670457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 670457 is about 818.8143867813. The cubic root of 670457 is about 87.5232917586.

The spelling of 670457 in words is "six hundred seventy thousand, four hundred fifty-seven".