68090121 has 12 divisors (see below), whose sum is σ = 107293680. Its totient is φ = 41266680.

The previous prime is 68090119. The next prime is 68090147. The reversal of 68090121 is 12109086.

It is not a de Polignac number, because 68090121 - 2¹ = 68090119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68090111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343791 + ... + 343988.

It is an arithmetic number, because the mean of its divisors is an integer number (8941140).

Almost surely, 2^68090121 is an apocalyptic number.

It is an amenable number.

68090121 is a deficient number, since it is larger than the sum of its proper divisors (39203559).

68090121 is a wasteful number, since it uses less digits than its factorization.

68090121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687796 (or 687793 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 68090121 is about 8251.6738301995. The cubic root of 68090121 is about 408.3457457100.

The spelling of 68090121 in words is "sixty-eight million, ninety thousand, one hundred twenty-one".