68696551 has 16 divisors (see below), whose sum is σ = 85881600. Its totient is φ = 53383680.

The previous prime is 68696549. The next prime is 68696569. The reversal of 68696551 is 15569686.

It is not a de Polignac number, because 68696551 - 2¹ = 68696549 is a prime.

It is a super-2 number, since 2×68696551² = 9438432238591202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68696501) 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 15 ways as a sum of consecutive naturals, for example, 33580 + ... + 35566.

It is an arithmetic number, because the mean of its divisors is an integer number (5367600).

Almost surely, 2^68696551 is an apocalyptic number.

68696551 is a deficient number, since it is larger than the sum of its proper divisors (17185049).

68696551 is a wasteful number, since it uses less digits than its factorization.

68696551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454.

The product of its digits is 388800, while the sum is 46.

The square root of 68696551 is about 8288.3382532327. The cubic root of 68696551 is about 409.5544455888.

The spelling of 68696551 in words is "sixty-eight million, six hundred ninety-six thousand, five hundred fifty-one".