68840889 has 16 divisors (see below), whose sum is σ = 99486912. Its totient is φ = 42090048.

The previous prime is 68840851. The next prime is 68840897. The reversal of 68840889 is 98804886.

It is not a de Polignac number, because 68840889 - 2¹² = 68836793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68840839) 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, 502 + ... + 11744.

It is an arithmetic number, because the mean of its divisors is an integer number (6217932).

Almost surely, 2^68840889 is an apocalyptic number.

It is an amenable number.

68840889 is a deficient number, since it is larger than the sum of its proper divisors (30646023).

68840889 is a wasteful number, since it uses less digits than its factorization.

68840889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11416.

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 68840889 is about 8297.0409785658. The cubic root of 68840889 is about 409.8410825712.

The spelling of 68840889 in words is "sixty-eight million, eight hundred forty thousand, eight hundred eighty-nine".