679534247 has 8 divisors (see below), whose sum is σ = 777675936. Its totient is φ = 581658912.

The previous prime is 679534243. The next prime is 679534249. The reversal of 679534247 is 742435976.

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 679534247 - 2² = 679534243 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 (679534243) 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, 61088 + ... + 71349.

It is an arithmetic number, because the mean of its divisors is an integer number (97209492).

Almost surely, 2^679534247 is an apocalyptic number.

679534247 is a deficient number, since it is larger than the sum of its proper divisors (98141689).

679534247 is a wasteful number, since it uses less digits than its factorization.

679534247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133177.

The product of its digits is 1270080, while the sum is 47.

The square root of 679534247 is about 26067.8776849977. The cubic root of 679534247 is about 879.1651202816.

The spelling of 679534247 in words is "six hundred seventy-nine million, five hundred thirty-four thousand, two hundred forty-seven".