68392661 has 12 divisors (see below), whose sum is σ = 71600832. Its totient is φ = 65297736.

The previous prime is 68392637. The next prime is 68392669. The reversal of 68392661 is 16629386.

It is not a de Polignac number, because 68392661 - 2¹⁰ = 68391637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68392669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86510 + ... + 87296.

It is an arithmetic number, because the mean of its divisors is an integer number (5966736).

Almost surely, 2^68392661 is an apocalyptic number.

It is an amenable number.

68392661 is a deficient number, since it is larger than the sum of its proper divisors (3208171).

68392661 is an equidigital number, since it uses as much as digits as its factorization.

68392661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 877 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 68392661 is about 8269.9855501688. The cubic root of 68392661 is about 408.9496433919.

The spelling of 68392661 in words is "sixty-eight million, three hundred ninety-two thousand, six hundred sixty-one".