679952581 has 8 divisors (see below), whose sum is σ = 847733184. Its totient is φ = 529833120.

The previous prime is 679952561. The next prime is 679952591. The reversal of 679952581 is 185259976.

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

It is a cyclic number.

It is not a de Polignac number, because 679952581 - 2⁵ = 679952549 is a prime.

It is a super-2 number, since 2×679952581² = 924671024817123122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679952561) 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, 4415200 + ... + 4415353.

It is an arithmetic number, because the mean of its divisors is an integer number (105966648).

Almost surely, 2^679952581 is an apocalyptic number.

It is an amenable number.

679952581 is a deficient number, since it is larger than the sum of its proper divisors (167780603).

679952581 is a wasteful number, since it uses less digits than its factorization.

679952581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830571.

The product of its digits is 1360800, while the sum is 52.

The square root of 679952581 is about 26075.9003871391. The cubic root of 679952581 is about 879.3454934402.

The spelling of 679952581 in words is "six hundred seventy-nine million, nine hundred fifty-two thousand, five hundred eighty-one".