68627291 has 4 divisors (see below), whose sum is σ = 68646192. Its totient is φ = 68608392.

The previous prime is 68627287. The next prime is 68627329. The reversal of 68627291 is 19272686.

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 68627291 - 2² = 68627287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68627261) 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, 2096 + ... + 11901.

It is an arithmetic number, because the mean of its divisors is an integer number (17161548).

Almost surely, 2^68627291 is an apocalyptic number.

68627291 is a deficient number, since it is larger than the sum of its proper divisors (18901).

68627291 is a wasteful number, since it uses less digits than its factorization.

68627291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18900.

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

The square root of 68627291 is about 8284.1590399992. The cubic root of 68627291 is about 409.4167614371.

The spelling of 68627291 in words is "sixty-eight million, six hundred twenty-seven thousand, two hundred ninety-one".