679231397 has 8 divisors (see below), whose sum is σ = 748491744. Its totient is φ = 612401328.

The previous prime is 679231387. The next prime is 679231409. The reversal of 679231397 is 793132976.

It is a happy number.

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 679231397 - 2⁴ = 679231381 is a prime.

It is a super-2 number, since 2×679231397² = 922710581341143218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679231367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606983 + ... + 608100.

It is an arithmetic number, because the mean of its divisors is an integer number (93561468).

Almost surely, 2^679231397 is an apocalyptic number.

It is an amenable number.

679231397 is a deficient number, since it is larger than the sum of its proper divisors (69260347).

679231397 is a wasteful number, since it uses less digits than its factorization.

679231397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215139.

The product of its digits is 428652, while the sum is 47.

The square root of 679231397 is about 26062.0681642881. The cubic root of 679231397 is about 879.0344941839.

The spelling of 679231397 in words is "six hundred seventy-nine million, two hundred thirty-one thousand, three hundred ninety-seven".