679942 has 8 divisors (see below), whose sum is σ = 1029600. Its totient is φ = 336744.

The previous prime is 679933. The next prime is 679951. The reversal of 679942 is 249976.

It is an interprime number because it is at equal distance from previous prime (679933) and next prime (679951).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×679942² = 924642246728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342 + ... + 1777.

It is an arithmetic number, because the mean of its divisors is an integer number (128700).

2⁶⁷⁹⁹⁴² is an apocalyptic number.

679942 is a deficient number, since it is larger than the sum of its proper divisors (349658).

679942 is a wasteful number, since it uses less digits than its factorization.

679942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230.

The product of its digits is 27216, while the sum is 37.

The square root of 679942 is about 824.5859567080. The cubic root of 679942 is about 87.9340932140.

The spelling of 679942 in words is "six hundred seventy-nine thousand, nine hundred forty-two".