679724055 has 20 divisors (see below), whose sum is σ = 1218469032. Its totient is φ = 362519280.

The previous prime is 679724029. The next prime is 679724081. The reversal of 679724055 is 550427976.

679724055 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (679724029) and next prime (679724081).

It is not a de Polignac number, because 679724055 - 2⁸ = 679723799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 679724055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 838761 + ... + 839570.

Almost surely, 2^679724055 is an apocalyptic number.

679724055 is a deficient number, since it is larger than the sum of its proper divisors (538744977).

679724055 is a wasteful number, since it uses less digits than its factorization.

679724055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678348 (or 1678339 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 679724055 is about 26071.5180800812. The cubic root of 679724055 is about 879.2469690083.

It can be divided in two parts, 67972 and 4055, that added together give a palindrome (72027).

The spelling of 679724055 in words is "six hundred seventy-nine million, seven hundred twenty-four thousand, fifty-five".