68629261 has 2 divisors, whose sum is σ = 68629262. Its totient is φ = 68629260.

The previous prime is 68629229. The next prime is 68629277. The reversal of 68629261 is 16292686.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61921161 + 6708100 = 7869^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 68629261 - 2⁵ = 68629229 is a prime.

It is a super-2 number, since 2×68629261² = 9419950930812242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68629661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34314630 + 34314631.

It is an arithmetic number, because the mean of its divisors is an integer number (34314631).

Almost surely, 2^68629261 is an apocalyptic number.

It is an amenable number.

68629261 is a deficient number, since it is larger than the sum of its proper divisors (1).

68629261 is an equidigital number, since it uses as much as digits as its factorization.

68629261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 68629261 is about 8284.2779407743. The cubic root of 68629261 is about 409.4206789422.

The spelling of 68629261 in words is "sixty-eight million, six hundred twenty-nine thousand, two hundred sixty-one".