679186945 has 8 divisors (see below), whose sum is σ = 815572800. Its totient is φ = 542983920.

The previous prime is 679186927. The next prime is 679186979. The reversal of 679186945 is 549681976.

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

It is not a de Polignac number, because 679186945 - 2¹¹ = 679184897 is a prime.

It is a super-2 number, since 2×679186945² = 922589812516866050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37395 + ... + 52504.

It is an arithmetic number, because the mean of its divisors is an integer number (101946600).

Almost surely, 2^679186945 is an apocalyptic number.

It is an amenable number.

679186945 is a deficient number, since it is larger than the sum of its proper divisors (136385855).

679186945 is a wasteful number, since it uses less digits than its factorization.

679186945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91415.

The product of its digits is 3265920, while the sum is 55.

The square root of 679186945 is about 26061.2153400412. The cubic root of 679186945 is about 879.0153177570.

The spelling of 679186945 in words is "six hundred seventy-nine million, one hundred eighty-six thousand, nine hundred forty-five".