68991626 has 8 divisors (see below), whose sum is σ = 112895424. Its totient is φ = 31359820.

The previous prime is 68991613. The next prime is 68991701. The reversal of 68991626 is 62619986.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567970 + ... + 1568013.

It is an arithmetic number, because the mean of its divisors is an integer number (14111928).

Almost surely, 2^68991626 is an apocalyptic number.

68991626 is a deficient number, since it is larger than the sum of its proper divisors (43903798).

68991626 is a wasteful number, since it uses less digits than its factorization.

68991626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135996.

The product of its digits is 279936, while the sum is 47.

The square root of 68991626 is about 8306.1197920569. The cubic root of 68991626 is about 410.1399997806.

The spelling of 68991626 in words is "sixty-eight million, nine hundred ninety-one thousand, six hundred twenty-six".