68876457 has 12 divisors (see below), whose sum is σ = 99443664. Its totient is φ = 42385200.

The previous prime is 68876453. The next prime is 68876491. The reversal of 68876457 is 75467886.

It is not a de Polignac number, because 68876457 - 2² = 68876453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68876453) 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 11 ways as a sum of consecutive naturals, for example, 67419 + ... + 68432.

It is an arithmetic number, because the mean of its divisors is an integer number (8286972).

Almost surely, 2^68876457 is an apocalyptic number.

It is an amenable number.

68876457 is a deficient number, since it is larger than the sum of its proper divisors (30567207).

68876457 is a wasteful number, since it uses less digits than its factorization.

68876457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135880 (or 135867 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The square root of 68876457 is about 8299.1841165262. The cubic root of 68876457 is about 409.9116545720.

The spelling of 68876457 in words is "sixty-eight million, eight hundred seventy-six thousand, four hundred fifty-seven".