679477247 has 4 divisors (see below), whose sum is σ = 709019760. Its totient is φ = 649934736.

The previous prime is 679477243. The next prime is 679477303. The reversal of 679477247 is 742774976.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 679477247 - 2² = 679477243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679477243) 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, 14771222 + ... + 14771267.

It is an arithmetic number, because the mean of its divisors is an integer number (177254940).

Almost surely, 2^679477247 is an apocalyptic number.

679477247 is a deficient number, since it is larger than the sum of its proper divisors (29542513).

679477247 is a wasteful number, since it uses less digits than its factorization.

679477247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29542512.

The product of its digits is 4148928, while the sum is 53.

The square root of 679477247 is about 26066.7843624794. The cubic root of 679477247 is about 879.1405378497.

The spelling of 679477247 in words is "six hundred seventy-nine million, four hundred seventy-seven thousand, two hundred forty-seven".