679542 has 16 divisors (see below), whose sum is σ = 1396272. Its totient is φ = 220320.

The previous prime is 679537. The next prime is 679561. The reversal of 679542 is 245976.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679542.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309 + ... + 1752.

It is an arithmetic number, because the mean of its divisors is an integer number (87267).

2⁶⁷⁹⁵⁴² is an apocalyptic number.

679542 is an abundant number, since it is smaller than the sum of its proper divisors (716730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679542 is a wasteful number, since it uses less digits than its factorization.

679542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103.

The product of its digits is 15120, while the sum is 33.

The square root of 679542 is about 824.3433750568. The cubic root of 679542 is about 87.9168463817.

It can be divided in two parts, 6795 and 42, that multiplied together give a triangular number (285390 = T₇₅₅).

The spelling of 679542 in words is "six hundred seventy-nine thousand, five hundred forty-two".