68879261 has 4 divisors (see below), whose sum is σ = 75141024. Its totient is φ = 62617500.

The previous prime is 68879233. The next prime is 68879267. The reversal of 68879261 is 16297886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68879261 - 2¹⁴ = 68862877 is a prime.

It is a super-2 number, since 2×68879261² = 9488705191812242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68879267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3130865 + ... + 3130886.

It is an arithmetic number, because the mean of its divisors is an integer number (18785256).

Almost surely, 2^68879261 is an apocalyptic number.

It is an amenable number.

68879261 is a deficient number, since it is larger than the sum of its proper divisors (6261763).

68879261 is a wasteful number, since it uses less digits than its factorization.

68879261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6261762.

The product of its digits is 290304, while the sum is 47.

The square root of 68879261 is about 8299.3530470754. The cubic root of 68879261 is about 409.9172170759.

The spelling of 68879261 in words is "sixty-eight million, eight hundred seventy-nine thousand, two hundred sixty-one".