68133651 has 4 divisors (see below), whose sum is σ = 90844872. Its totient is φ = 45422432.

The previous prime is 68133643. The next prime is 68133661. The reversal of 68133651 is 15633186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68133651 - 2³ = 68133643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68133661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11355606 + ... + 11355611.

It is an arithmetic number, because the mean of its divisors is an integer number (22711218).

Almost surely, 2^68133651 is an apocalyptic number.

68133651 is a deficient number, since it is larger than the sum of its proper divisors (22711221).

68133651 is a wasteful number, since it uses less digits than its factorization.

68133651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22711220.

The product of its digits is 12960, while the sum is 33.

The square root of 68133651 is about 8254.3110554425. The cubic root of 68133651 is about 408.4327456226.

The spelling of 68133651 in words is "sixty-eight million, one hundred thirty-three thousand, six hundred fifty-one".