68436621 has 24 divisors (see below), whose sum is σ = 109882656. Its totient is φ = 40691040.

The previous prime is 68436619. The next prime is 68436629. The reversal of 68436621 is 12663486.

It is not a de Polignac number, because 68436621 - 2¹ = 68436619 is a prime.

It is a super-3 number, since 3×68436621³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68436629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1275 + ... + 11768.

It is an arithmetic number, because the mean of its divisors is an integer number (4578444).

Almost surely, 2^68436621 is an apocalyptic number.

It is an amenable number.

68436621 is a deficient number, since it is larger than the sum of its proper divisors (41446035).

68436621 is a wasteful number, since it uses less digits than its factorization.

68436621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13113 (or 13110 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 68436621 is about 8272.6429271424. The cubic root of 68436621 is about 409.0372433172.

The spelling of 68436621 in words is "sixty-eight million, four hundred thirty-six thousand, six hundred twenty-one".