679018081 has 8 divisors (see below), whose sum is σ = 777978560. Its totient is φ = 580547088.

The previous prime is 679018069. The next prime is 679018099. The reversal of 679018081 is 180810976.

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 679018081 - 2¹³ = 679009889 is a prime.

It is a super-2 number, since 2×679018081² = 922131108649845122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679013081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119391 + ... + 124948.

It is an arithmetic number, because the mean of its divisors is an integer number (97247320).

Almost surely, 2^679018081 is an apocalyptic number.

It is an amenable number.

679018081 is a deficient number, since it is larger than the sum of its proper divisors (98960479).

679018081 is a wasteful number, since it uses less digits than its factorization.

679018081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244743.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 679018081 is about 26057.9753818289. The cubic root of 679018081 is about 878.9424628300.

The spelling of 679018081 in words is "six hundred seventy-nine million, eighteen thousand, eighty-one".