671740732 has 24 divisors (see below), whose sum is σ = 1292913216. Its totient is φ = 303436608.

The previous prime is 671740721. The next prime is 671740733. The reversal of 671740732 is 237047176.

It is a super-2 number, since 2×671740732² = 902471222055791648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 671740691 and 671740700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671740733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134983 + ... + 139870.

It is an arithmetic number, because the mean of its divisors is an integer number (53871384).

Almost surely, 2^671740732 is an apocalyptic number.

It is an amenable number.

671740732 is a deficient number, since it is larger than the sum of its proper divisors (621172484).

671740732 is a wasteful number, since it uses less digits than its factorization.

671740732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274917 (or 274915 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 671740732 is about 25917.9615710804. The cubic root of 671740732 is about 875.7911677368.

The spelling of 671740732 in words is "six hundred seventy-one million, seven hundred forty thousand, seven hundred thirty-two".