68884761 has 16 divisors (see below), whose sum is σ = 101468160. Its totient is φ = 41218320.

The previous prime is 68884757. The next prime is 68884763. The reversal of 68884761 is 16748886.

It is not a de Polignac number, because 68884761 - 2² = 68884757 is a prime.

It is a super-2 number, since 2×68884761² = 9490220596054242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68884761.

It is not an unprimeable number, because it can be changed into a prime (68884763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10605 + ... + 15818.

It is an arithmetic number, because the mean of its divisors is an integer number (6341760).

Almost surely, 2^68884761 is an apocalyptic number.

It is an amenable number.

68884761 is a deficient number, since it is larger than the sum of its proper divisors (32583399).

68884761 is a wasteful number, since it uses less digits than its factorization.

68884761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26516.

The product of its digits is 516096, while the sum is 48.

The square root of 68884761 is about 8299.6843915898. The cubic root of 68884761 is about 409.9281273976.

The spelling of 68884761 in words is "sixty-eight million, eight hundred eighty-four thousand, seven hundred sixty-one".