671002057 has 16 divisors (see below), whose sum is σ = 759325248. Its totient is φ = 587623680.

The previous prime is 671002039. The next prime is 671002109. The reversal of 671002057 is 750200176.

It is a cyclic number.

It is not a de Polignac number, because 671002057 - 2²³ = 662613449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671002027) 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, 24813 + ... + 44245.

It is an arithmetic number, because the mean of its divisors is an integer number (47457828).

Almost surely, 2^671002057 is an apocalyptic number.

It is an amenable number.

671002057 is a deficient number, since it is larger than the sum of its proper divisors (88323191).

671002057 is a wasteful number, since it uses less digits than its factorization.

671002057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19560.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 671002057 is about 25903.7073987489. The cubic root of 671002057 is about 875.4700307843.

The spelling of 671002057 in words is "six hundred seventy-one million, two thousand, fifty-seven".