68836457 has 2 divisors, whose sum is σ = 68836458. Its totient is φ = 68836456.

The previous prime is 68836433. The next prime is 68836463. The reversal of 68836457 is 75463886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62789776 + 6046681 = 7924^2 + 2459^2 .

It is a cyclic number.

It is not a de Polignac number, because 68836457 - 2⁶ = 68836393 is a prime.

It is not a weakly prime, because it can be changed into another prime (68836477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34418228 + 34418229.

It is an arithmetic number, because the mean of its divisors is an integer number (34418229).

Almost surely, 2^68836457 is an apocalyptic number.

It is an amenable number.

68836457 is a deficient number, since it is larger than the sum of its proper divisors (1).

68836457 is an equidigital number, since it uses as much as digits as its factorization.

68836457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The square root of 68836457 is about 8296.7738910977. The cubic root of 68836457 is about 409.8322871461.

The spelling of 68836457 in words is "sixty-eight million, eight hundred thirty-six thousand, four hundred fifty-seven".