68481889 has 16 divisors (see below), whose sum is σ = 79672320. Its totient is φ = 57652560.

The previous prime is 68481887. The next prime is 68481901. The reversal of 68481889 is 98818486.

It is not a de Polignac number, because 68481889 - 2¹ = 68481887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68481887) 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, 180502 + ... + 180880.

It is an arithmetic number, because the mean of its divisors is an integer number (4979520).

Almost surely, 2^68481889 is an apocalyptic number.

It is an amenable number.

68481889 is a deficient number, since it is larger than the sum of its proper divisors (11190431).

68481889 is a wasteful number, since it uses less digits than its factorization.

68481889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 884736, while the sum is 52.

The square root of 68481889 is about 8275.3784807705. The cubic root of 68481889 is about 409.1274105238.

The spelling of 68481889 in words is "sixty-eight million, four hundred eighty-one thousand, eight hundred eighty-nine".