68550881 has 4 divisors (see below), whose sum is σ = 78343872. Its totient is φ = 58757892.

The previous prime is 68550761. The next prime is 68550883. The reversal of 68550881 is 18805586.

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 a cyclic number.

It is not a de Polignac number, because 68550881 - 2²⁶ = 1442017 is a prime.

It is a super-2 number, since 2×68550881² = 9398446571752322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68550883) 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, 4896485 + ... + 4896498.

It is an arithmetic number, because the mean of its divisors is an integer number (19585968).

Almost surely, 2^68550881 is an apocalyptic number.

It is an amenable number.

68550881 is a deficient number, since it is larger than the sum of its proper divisors (9792991).

68550881 is an equidigital number, since it uses as much as digits as its factorization.

68550881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9792990.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 68550881 is about 8279.5459416565. The cubic root of 68550881 is about 409.2647560570.

The spelling of 68550881 in words is "sixty-eight million, five hundred fifty thousand, eight hundred eighty-one".