68813877 has 16 divisors (see below), whose sum is σ = 105361920. Its totient is φ = 39510000.

The previous prime is 68813869. The next prime is 68813879. The reversal of 68813877 is 77831886.

It is not a de Polignac number, because 68813877 - 2³ = 68813869 is a prime.

It is a super-2 number, since 2×68813877² = 9470699335542258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68813879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54249 + ... + 55502.

It is an arithmetic number, because the mean of its divisors is an integer number (6585120).

Almost surely, 2^68813877 is an apocalyptic number.

It is an amenable number.

68813877 is a deficient number, since it is larger than the sum of its proper divisors (36548043).

68813877 is a wasteful number, since it uses less digits than its factorization.

68813877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109784.

The product of its digits is 451584, while the sum is 48.

The square root of 68813877 is about 8295.4130096096. The cubic root of 68813877 is about 409.7874706565.

Subtracting 68813877 from its reverse (77831886), we obtain a square (9018009 = 3003²).

The spelling of 68813877 in words is "sixty-eight million, eight hundred thirteen thousand, eight hundred seventy-seven".