68416551 has 48 divisors (see below), whose sum is σ = 120766464. Its totient is φ = 36433152.

The previous prime is 68416547. The next prime is 68416553. The reversal of 68416551 is 15561486.

68416551 is a `hidden beast` number, since 68 + 41 + 6 + 551 = 666.

It is not a de Polignac number, because 68416551 - 2² = 68416547 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68416553) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 135766 + ... + 136268.

It is an arithmetic number, because the mean of its divisors is an integer number (2515968).

Almost surely, 2^68416551 is an apocalyptic number.

68416551 is a deficient number, since it is larger than the sum of its proper divisors (52349913).

68416551 is a wasteful number, since it uses less digits than its factorization.

68416551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 68416551 is about 8271.4298038489. The cubic root of 68416551 is about 408.9972541029.

The spelling of 68416551 in words is "sixty-eight million, four hundred sixteen thousand, five hundred fifty-one".