68776453 has 2 divisors, whose sum is σ = 68776454. Its totient is φ = 68776452.

The previous prime is 68776399. The next prime is 68776481. The reversal of 68776453 is 35467786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58644964 + 10131489 = 7658^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 68776453 - 2²⁵ = 35222021 is a prime.

It is a super-2 number, since 2×68776453² = 9460400974522418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68776483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34388226 + 34388227.

It is an arithmetic number, because the mean of its divisors is an integer number (34388227).

Almost surely, 2^68776453 is an apocalyptic number.

It is an amenable number.

68776453 is a deficient number, since it is larger than the sum of its proper divisors (1).

68776453 is an equidigital number, since it uses as much as digits as its factorization.

68776453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 68776453 is about 8293.1569983933. The cubic root of 68776453 is about 409.7131703946.

The spelling of 68776453 in words is "sixty-eight million, seven hundred seventy-six thousand, four hundred fifty-three".