679420165 has 8 divisors (see below), whose sum is σ = 817961760. Its totient is φ = 541764432.

The previous prime is 679420151. The next prime is 679420171. The reversal of 679420165 is 561024976.

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 679420165 - 2²¹ = 677323013 is a prime.

It is a super-2 number, since 2×679420165² = 923223521217254450, which contains 22 as substring.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219775 + ... + 222844.

It is an arithmetic number, because the mean of its divisors is an integer number (102245220).

Almost surely, 2^679420165 is an apocalyptic number.

It is an amenable number.

679420165 is a deficient number, since it is larger than the sum of its proper divisors (138541595).

679420165 is a wasteful number, since it uses less digits than its factorization.

679420165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442931.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 679420165 is about 26065.6894211529. The cubic root of 679420165 is about 879.1159186758.

The spelling of 679420165 in words is "six hundred seventy-nine million, four hundred twenty thousand, one hundred sixty-five".