679008405 has 16 divisors (see below), whose sum is σ = 1101297600. Its totient is φ = 357176448.

The previous prime is 679008401. The next prime is 679008413. The reversal of 679008405 is 504800976.

It is not a de Polignac number, because 679008405 - 2² = 679008401 is a prime.

It is a super-2 number, since 2×679008405² = 922104828121288050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679008401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308955 + ... + 311144.

It is an arithmetic number, because the mean of its divisors is an integer number (68831100).

Almost surely, 2^679008405 is an apocalyptic number.

It is an amenable number.

679008405 is a deficient number, since it is larger than the sum of its proper divisors (422289195).

679008405 is a wasteful number, since it uses less digits than its factorization.

679008405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620180.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 679008405 is about 26057.7897182397. The cubic root of 679008405 is about 878.9382878368.

The spelling of 679008405 in words is "six hundred seventy-nine million, eight thousand, four hundred five".