68652431 has 2 divisors, whose sum is σ = 68652432. Its totient is φ = 68652430.

The previous prime is 68652391. The next prime is 68652433. The reversal of 68652431 is 13425686.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68652431 is a prime.

It is a super-2 number, since 2×68652431² = 9426312564419522, which contains 22 as substring.

Together with 68652433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68652391 and 68652400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68652433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34326215 + 34326216.

It is an arithmetic number, because the mean of its divisors is an integer number (34326216).

Almost surely, 2^68652431 is an apocalyptic number.

68652431 is a deficient number, since it is larger than the sum of its proper divisors (1).

68652431 is an equidigital number, since it uses as much as digits as its factorization.

68652431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 68652431 is about 8285.6762548388. The cubic root of 68652431 is about 409.4667487461.

The spelling of 68652431 in words is "sixty-eight million, six hundred fifty-two thousand, four hundred thirty-one".