68428793 has 2 divisors, whose sum is σ = 68428794. Its totient is φ = 68428792.

The previous prime is 68428753. The next prime is 68428819. The reversal of 68428793 is 39782486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68425984 + 2809 = 8272^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 68428793 - 2¹⁶ = 68363257 is a prime.

It is a super-2 number, since 2×68428793² = 9364999422873698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68428753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34214396 + 34214397.

It is an arithmetic number, because the mean of its divisors is an integer number (34214397).

Almost surely, 2^68428793 is an apocalyptic number.

It is an amenable number.

68428793 is a deficient number, since it is larger than the sum of its proper divisors (1).

68428793 is an equidigital number, since it uses as much as digits as its factorization.

68428793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 68428793 is about 8272.1697879093. The cubic root of 68428793 is about 409.0216470590.

The spelling of 68428793 in words is "sixty-eight million, four hundred twenty-eight thousand, seven hundred ninety-three".