672766171 has 24 divisors (see below), whose sum is σ = 865785312. Its totient is φ = 511420800.

The previous prime is 672766147. The next prime is 672766181. The reversal of 672766171 is 171667276.

It is not a de Polignac number, because 672766171 - 2⁷ = 672766043 is a prime.

It is a super-2 number, since 2×672766171² = 905228641684002482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (672766181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25041 + ... + 44413.

It is an arithmetic number, because the mean of its divisors is an integer number (36074388).

Almost surely, 2^672766171 is an apocalyptic number.

672766171 is a deficient number, since it is larger than the sum of its proper divisors (193019141).

672766171 is a wasteful number, since it uses less digits than its factorization.

672766171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19443 (or 19432 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The square root of 672766171 is about 25937.7364278381. The cubic root of 672766171 is about 876.2365845390.

The spelling of 672766171 in words is "six hundred seventy-two million, seven hundred sixty-six thousand, one hundred seventy-one".