671615607 has 8 divisors (see below), whose sum is σ = 964371184. Its totient is φ = 413301888.

The previous prime is 671615557. The next prime is 671615621. The reversal of 671615607 is 706516176.

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

It is not a de Polignac number, because 671615607 - 2¹⁰ = 671614583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 17220913 = 671615607 / (6 + 7 + 1 + 6 + 1 + 5 + 6 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671615657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8610418 + ... + 8610495.

It is an arithmetic number, because the mean of its divisors is an integer number (120546398).

Almost surely, 2^671615607 is an apocalyptic number.

671615607 is a deficient number, since it is larger than the sum of its proper divisors (292755577).

671615607 is a wasteful number, since it uses less digits than its factorization.

671615607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17220929.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 671615607 is about 25915.5475921309. The cubic root of 671615607 is about 875.7367865501.

The spelling of 671615607 in words is "six hundred seventy-one million, six hundred fifteen thousand, six hundred seven".