679745547907 has 4 divisors (see below), whose sum is σ = 679753096416. Its totient is φ = 679737999400.

The previous prime is 679745547881. The next prime is 679745547919. The reversal of 679745547907 is 709745547976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 679745547907 - 2¹⁵ = 679745515139 is a prime.

It is a Duffinian number.

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, 3637528 + ... + 3819829.

It is an arithmetic number, because the mean of its divisors is an integer number (169938274104).

Almost surely, 2^679745547907 is an apocalyptic number.

679745547907 is a deficient number, since it is larger than the sum of its proper divisors (7548509).

679745547907 is an equidigital number, since it uses as much as digits as its factorization.

679745547907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7548508.

The product of its (nonzero) digits is 466754400, while the sum is 70.

The spelling of 679745547907 in words is "six hundred seventy-nine billion, seven hundred forty-five million, five hundred forty-seven thousand, nine hundred seven".