671534618 has 8 divisors (see below), whose sum is σ = 1011819648. Its totient is φ = 334261404.

The previous prime is 671534609. The next prime is 671534623. The reversal of 671534618 is 816435176.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752396 + ... + 753287.

It is an arithmetic number, because the mean of its divisors is an integer number (126477456).

Almost surely, 2^671534618 is an apocalyptic number.

671534618 is a deficient number, since it is larger than the sum of its proper divisors (340285030).

671534618 is a wasteful number, since it uses less digits than its factorization.

671534618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505908.

The product of its digits is 120960, while the sum is 41.

The square root of 671534618 is about 25913.9849888048. The cubic root of 671534618 is about 875.7015839247.

The spelling of 671534618 in words is "six hundred seventy-one million, five hundred thirty-four thousand, six hundred eighteen".