679642755 has 32 divisors (see below), whose sum is σ = 1237870080. Its totient is φ = 315194880.

The previous prime is 679642703. The next prime is 679642763. The reversal of 679642755 is 557246976.

It is not a de Polignac number, because 679642755 - 2¹³ = 679634563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 679642698 and 679642707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85750 + ... + 93339.

It is an arithmetic number, because the mean of its divisors is an integer number (38683440).

Almost surely, 2^679642755 is an apocalyptic number.

679642755 is a deficient number, since it is larger than the sum of its proper divisors (558227325).

679642755 is a wasteful number, since it uses less digits than its factorization.

679642755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179131.

The product of its digits is 3175200, while the sum is 51.

The square root of 679642755 is about 26069.9588607270. The cubic root of 679642755 is about 879.2119128076.

The spelling of 679642755 in words is "six hundred seventy-nine million, six hundred forty-two thousand, seven hundred fifty-five".