679542719 has 8 divisors (see below), whose sum is σ = 686959152. Its totient is φ = 672160320.

The previous prime is 679542701. The next prime is 679542727. The reversal of 679542719 is 917245976.

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 679542719 - 2⁸ = 679542463 is a prime.

It is a super-2 number, since 2×679542719² = 923556613891825922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679542739) 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, 32717 + ... + 49289.

It is an arithmetic number, because the mean of its divisors is an integer number (85869894).

Almost surely, 2^679542719 is an apocalyptic number.

679542719 is a deficient number, since it is larger than the sum of its proper divisors (7416433).

679542719 is a wasteful number, since it uses less digits than its factorization.

679542719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17017.

The product of its digits is 952560, while the sum is 50.

The square root of 679542719 is about 26068.0401833356. The cubic root of 679542719 is about 879.1687738899.

The spelling of 679542719 in words is "six hundred seventy-nine million, five hundred forty-two thousand, seven hundred nineteen".