671416155 has 32 divisors (see below), whose sum is σ = 1195905600. Its totient is φ = 357405696.

The previous prime is 671416153. The next prime is 671416189. The reversal of 671416155 is 551614176.

It is a happy number.

It is not a de Polignac number, because 671416155 - 2¹ = 671416153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671416153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70731 + ... + 79659.

It is an arithmetic number, because the mean of its divisors is an integer number (37372050).

Almost surely, 2^671416155 is an apocalyptic number.

671416155 is a deficient number, since it is larger than the sum of its proper divisors (524489445).

671416155 is a wasteful number, since it uses less digits than its factorization.

671416155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9500 (or 9494 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 671416155 is about 25911.6991916779. The cubic root of 671416155 is about 875.6500877772.

The spelling of 671416155 in words is "six hundred seventy-one million, four hundred sixteen thousand, one hundred fifty-five".