670671457 has 4 divisors (see below), whose sum is σ = 678751920. Its totient is φ = 662590996.

The previous prime is 670671431. The next prime is 670671503. The reversal of 670671457 is 754176076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670671457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670671257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040107 + ... + 4040272.

It is an arithmetic number, because the mean of its divisors is an integer number (169687980).

Almost surely, 2^670671457 is an apocalyptic number.

It is an amenable number.

670671457 is a deficient number, since it is larger than the sum of its proper divisors (8080463).

670671457 is an equidigital number, since it uses as much as digits as its factorization.

670671457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080462.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 670671457 is about 25897.3252866005. The cubic root of 670671457 is about 875.3262269833.

The spelling of 670671457 in words is "six hundred seventy million, six hundred seventy-one thousand, four hundred fifty-seven".