679034371491 has 24 divisors (see below), whose sum is σ = 1186883609184. Its totient is φ = 365194955520.

The previous prime is 679034371459. The next prime is 679034371517. The reversal of 679034371491 is 194173430976.

679034371491 is a `hidden beast` number, since 6 + 7 + 90 + 34 + 37 + 1 + 491 = 666.

It is not a de Polignac number, because 679034371491 - 2⁵ = 679034371459 is a prime.

It is a super-2 number, since 2×679034371491² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679034371441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317008440 + ... + 317010581.

It is an arithmetic number, because the mean of its divisors is an integer number (49453483716).

Almost surely, 2^679034371491 is an apocalyptic number.

679034371491 is a deficient number, since it is larger than the sum of its proper divisors (507849237693).

679034371491 is a wasteful number, since it uses less digits than its factorization.

679034371491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634019051 (or 634019048 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

It can be divided in two parts, 679034 and 371491, that added together give a triangular number (1050525 = T₁₄₄₉).

The spelling of 679034371491 in words is "six hundred seventy-nine billion, thirty-four million, three hundred seventy-one thousand, four hundred ninety-one".