671615674 has 8 divisors (see below), whose sum is σ = 1016839008. Its totient is φ = 332669340.

The previous prime is 671615671. The next prime is 671615683. The reversal of 671615674 is 476516176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×671615674² = 902135227124948552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671615674.

It is not an unprimeable number, because it can be changed into a prime (671615671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568982 + ... + 1569409.

It is an arithmetic number, because the mean of its divisors is an integer number (127104876).

Almost surely, 2^671615674 is an apocalyptic number.

671615674 is a deficient number, since it is larger than the sum of its proper divisors (345223334).

671615674 is a wasteful number, since it uses less digits than its factorization.

671615674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138500.

The product of its digits is 211680, while the sum is 43.

The square root of 671615674 is about 25915.5488847912. The cubic root of 671615674 is about 875.7368156711.

The spelling of 671615674 in words is "six hundred seventy-one million, six hundred fifteen thousand, six hundred seventy-four".