679333491 has 6 divisors (see below), whose sum is σ = 981259500. Its totient is φ = 452888988.

The previous prime is 679333483. The next prime is 679333511. The reversal of 679333491 is 194333976.

It is a happy number.

It is not a de Polignac number, because 679333491 - 2³ = 679333483 is a prime.

It is a super-2 number, since 2×679333491² = 922987983988494162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679333891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37740741 + ... + 37740758.

It is an arithmetic number, because the mean of its divisors is an integer number (163543250).

Almost surely, 2^679333491 is an apocalyptic number.

679333491 is a deficient number, since it is larger than the sum of its proper divisors (301926009).

679333491 is a wasteful number, since it uses less digits than its factorization.

679333491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75481505 (or 75481502 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 679333491 is about 26064.0267610360. The cubic root of 679333491 is about 879.0785339874.

The spelling of 679333491 in words is "six hundred seventy-nine million, three hundred thirty-three thousand, four hundred ninety-one".