679667418 has 12 divisors (see below), whose sum is σ = 1472612778. Its totient is φ = 226555800.

The previous prime is 679667407. The next prime is 679667437. The reversal of 679667418 is 814766976.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 679488489 + 178929 = 26067^2 + 423^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18879633 + ... + 18879668.

Almost surely, 2^679667418 is an apocalyptic number.

679667418 is an abundant number, since it is smaller than the sum of its proper divisors (792945360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679667418 is a wasteful number, since it uses less digits than its factorization.

679667418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37759309 (or 37759306 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 679667418 is about 26070.4318721420. The cubic root of 679667418 is about 879.2225476796. Note that the first 3 decimals are identical.

The spelling of 679667418 in words is "six hundred seventy-nine million, six hundred sixty-seven thousand, four hundred eighteen".