679220841 has 16 divisors (see below), whose sum is σ = 977820480. Its totient is φ = 416898240.

The previous prime is 679220827. The next prime is 679220849. The reversal of 679220841 is 148022976.

It is not a de Polignac number, because 679220841 - 2⁶ = 679220777 is a prime.

It is a super-2 number, since 2×679220841² = 922681901697494562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 679220841.

It is not an unprimeable number, because it can be changed into a prime (679220849) 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, 7215 + ... + 37556.

It is an arithmetic number, because the mean of its divisors is an integer number (61113780).

Almost surely, 2^679220841 is an apocalyptic number.

It is an amenable number.

679220841 is a deficient number, since it is larger than the sum of its proper divisors (298599639).

679220841 is a wasteful number, since it uses less digits than its factorization.

679220841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45176.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 679220841 is about 26061.8656469563. The cubic root of 679220841 is about 879.0299404407.

The spelling of 679220841 in words is "six hundred seventy-nine million, two hundred twenty thousand, eight hundred forty-one".