68610121 has 4 divisors (see below), whose sum is σ = 72221200. Its totient is φ = 64999044.

The previous prime is 68610107. The next prime is 68610131. The reversal of 68610121 is 12101686.

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 68610121 - 2⁵ = 68610089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68610131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805511 + ... + 1805548.

It is an arithmetic number, because the mean of its divisors is an integer number (18055300).

Almost surely, 2^68610121 is an apocalyptic number.

It is an amenable number.

68610121 is a deficient number, since it is larger than the sum of its proper divisors (3611079).

68610121 is a wasteful number, since it uses less digits than its factorization.

68610121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611078.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 68610121 is about 8283.1226599635. The cubic root of 68610121 is about 409.3826143214.

The spelling of 68610121 in words is "sixty-eight million, six hundred ten thousand, one hundred twenty-one".