68976261 has 6 divisors (see below), whose sum is σ = 99632390. Its totient is φ = 45984168.

The previous prime is 68976253. The next prime is 68976263. The reversal of 68976261 is 16267986.

It can be written as a sum of positive squares in only one way, i.e., 61308900 + 7667361 = 7830^2 + 2769^2 .

It is not a de Polignac number, because 68976261 - 2³ = 68976253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68976263) 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 5 ways as a sum of consecutive naturals, for example, 3832006 + ... + 3832023.

Almost surely, 2^68976261 is an apocalyptic number.

It is an amenable number.

68976261 is a deficient number, since it is larger than the sum of its proper divisors (30656129).

68976261 is a wasteful number, since it uses less digits than its factorization.

68976261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7664035 (or 7664032 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 68976261 is about 8305.1948201111. The cubic root of 68976261 is about 410.1095503413.

The spelling of 68976261 in words is "sixty-eight million, nine hundred seventy-six thousand, two hundred sixty-one".