68992479 has 40 divisors (see below), whose sum is σ = 111339360. Its totient is φ = 42444864.

The previous prime is 68992459. The next prime is 68992481. The reversal of 68992479 is 97429986.

68992479 is a `hidden beast` number, since 6 + 89 + 92 + 479 = 666.

It is not a de Polignac number, because 68992479 - 2⁷ = 68992351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68992459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53389 + ... + 54665.

It is an arithmetic number, because the mean of its divisors is an integer number (2783484).

Almost surely, 2^68992479 is an apocalyptic number.

68992479 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

68992479 is a deficient number, since it is larger than the sum of its proper divisors (42346881).

68992479 is a wasteful number, since it uses less digits than its factorization.

68992479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1332 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 68992479 is about 8306.1711395805. The cubic root of 68992479 is about 410.1416900725.

The spelling of 68992479 in words is "sixty-eight million, nine hundred ninety-two thousand, four hundred seventy-nine".