68392761 has 16 divisors (see below), whose sum is σ = 98587200. Its totient is φ = 42026688.

The previous prime is 68392757. The next prime is 68392771. The reversal of 68392761 is 16729386.

It is a happy number.

It is not a de Polignac number, because 68392761 - 2² = 68392757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68392711) 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 15 ways as a sum of consecutive naturals, for example, 14106 + ... + 18323.

It is an arithmetic number, because the mean of its divisors is an integer number (6161700).

Almost surely, 2^68392761 is an apocalyptic number.

It is an amenable number.

68392761 is a deficient number, since it is larger than the sum of its proper divisors (30194439).

68392761 is a wasteful number, since it uses less digits than its factorization.

68392761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32488.

The product of its digits is 108864, while the sum is 42.

The square root of 68392761 is about 8269.9915961263. The cubic root of 68392761 is about 408.9498427064.

The spelling of 68392761 in words is "sixty-eight million, three hundred ninety-two thousand, seven hundred sixty-one".