68672291 has 8 divisors (see below), whose sum is σ = 69822480. Its totient is φ = 67529952.

The previous prime is 68672287. The next prime is 68672297. The reversal of 68672291 is 19227686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68672291 - 2² = 68672287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68672297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17201 + ... + 20813.

It is an arithmetic number, because the mean of its divisors is an integer number (8727810).

Almost surely, 2^68672291 is an apocalyptic number.

68672291 is a deficient number, since it is larger than the sum of its proper divisors (1150189).

68672291 is a wasteful number, since it uses less digits than its factorization.

68672291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925.

The product of its digits is 72576, while the sum is 41.

The square root of 68672291 is about 8286.8746219549. The cubic root of 68672291 is about 409.5062288999.

The spelling of 68672291 in words is "sixty-eight million, six hundred seventy-two thousand, two hundred ninety-one".