68809977 has 12 divisors (see below), whose sum is σ = 100152624. Its totient is φ = 45522360.

The previous prime is 68809969. The next prime is 68809981. The reversal of 68809977 is 77990886.

It is not a de Polignac number, because 68809977 - 2³ = 68809969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68809907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28003 + ... + 30360.

It is an arithmetic number, because the mean of its divisors is an integer number (8346052).

Almost surely, 2^68809977 is an apocalyptic number.

It is an amenable number.

68809977 is a deficient number, since it is larger than the sum of its proper divisors (31342647).

68809977 is a wasteful number, since it uses less digits than its factorization.

68809977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58500 (or 58497 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 68809977 is about 8295.1779366087. The cubic root of 68809977 is about 409.7797289945.

The spelling of 68809977 in words is "sixty-eight million, eight hundred nine thousand, nine hundred seventy-seven".