671271755 has 64 divisors (see below), whose sum is σ = 1034505216. Its totient is φ = 406080000.

The previous prime is 671271749. The next prime is 671271761. The reversal of 671271755 is 557172176.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (671271749) and next prime (671271761).

It is not a de Polignac number, because 671271755 - 2⁴ = 671271739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2371844 + ... + 2372126.

It is an arithmetic number, because the mean of its divisors is an integer number (16164144).

Almost surely, 2^671271755 is an apocalyptic number.

671271755 is a deficient number, since it is larger than the sum of its proper divisors (363233461).

671271755 is a wasteful number, since it uses less digits than its factorization.

671271755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its digits is 102900, while the sum is 41.

The square root of 671271755 is about 25908.9126556867. The cubic root of 671271755 is about 875.5873085617.

The spelling of 671271755 in words is "six hundred seventy-one million, two hundred seventy-one thousand, seven hundred fifty-five".