68684091 has 8 divisors (see below), whose sum is σ = 104661504. Its totient is φ = 39248040.

The previous prime is 68684081. The next prime is 68684111. The reversal of 68684091 is 19048686.

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

It is not a de Polignac number, because 68684091 - 2⁷ = 68683963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68684041) 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, 1635315 + ... + 1635356.

It is an arithmetic number, because the mean of its divisors is an integer number (13082688).

Almost surely, 2^68684091 is an apocalyptic number.

68684091 is a deficient number, since it is larger than the sum of its proper divisors (35977413).

68684091 is a wasteful number, since it uses less digits than its factorization.

68684091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270681.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 68684091 is about 8287.5865606339. The cubic root of 68684091 is about 409.5296827883.

The spelling of 68684091 in words is "sixty-eight million, six hundred eighty-four thousand, ninety-one".