679762849 has 4 divisors (see below), whose sum is σ = 679970736. Its totient is φ = 679554964.

The previous prime is 679762843. The next prime is 679762873. The reversal of 679762849 is 948267976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 679762849 - 2³ = 679762841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679762793 and 679762802.

It is not an unprimeable number, because it can be changed into a prime (679762841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98959 + ... + 105604.

It is an arithmetic number, because the mean of its divisors is an integer number (169992684).

Almost surely, 2^679762849 is an apocalyptic number.

It is an amenable number.

679762849 is a deficient number, since it is larger than the sum of its proper divisors (207887).

679762849 is a wasteful number, since it uses less digits than its factorization.

679762849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207886.

The product of its digits is 9144576, while the sum is 58.

The square root of 679762849 is about 26072.2620614323. The cubic root of 679762849 is about 879.2636958245.

The spelling of 679762849 in words is "six hundred seventy-nine million, seven hundred sixty-two thousand, eight hundred forty-nine".