671702171 has 16 divisors (see below), whose sum is σ = 787205568. Its totient is φ = 561254400.

The previous prime is 671702153. The next prime is 671702177. The reversal of 671702171 is 171207176.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-671702171 is a prime.

It is a super-2 number, since 2×671702171² = 902367613052226482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671702177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41291 + ... + 55211.

It is an arithmetic number, because the mean of its divisors is an integer number (49200348).

Almost surely, 2^671702171 is an apocalyptic number.

671702171 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

671702171 is a deficient number, since it is larger than the sum of its proper divisors (115503397).

671702171 is a wasteful number, since it uses less digits than its factorization.

671702171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14102.

The product of its (nonzero) digits is 4116, while the sum is 32.

The square root of 671702171 is about 25917.2176554506. The cubic root of 671702171 is about 875.7744092724.

The spelling of 671702171 in words is "six hundred seventy-one million, seven hundred two thousand, one hundred seventy-one".