68926457 has 2 divisors, whose sum is σ = 68926458. Its totient is φ = 68926456.

The previous prime is 68926441. The next prime is 68926489. The reversal of 68926457 is 75462986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68492176 + 434281 = 8276^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 68926457 - 2⁴ = 68926441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68926057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34463228 + 34463229.

It is an arithmetic number, because the mean of its divisors is an integer number (34463229).

Almost surely, 2^68926457 is an apocalyptic number.

It is an amenable number.

68926457 is a deficient number, since it is larger than the sum of its proper divisors (1).

68926457 is an equidigital number, since it uses as much as digits as its factorization.

68926457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 68926457 is about 8302.1959143350. The cubic root of 68926457 is about 410.0108206543.

The spelling of 68926457 in words is "sixty-eight million, nine hundred twenty-six thousand, four hundred fifty-seven".