68937091 has 8 divisors (see below), whose sum is σ = 73373904. Its totient is φ = 64542720.

The previous prime is 68937083. The next prime is 68937107. The reversal of 68937091 is 19073986.

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 68937091 - 2³ = 68937083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68937191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7225 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (9171738).

Almost surely, 2^68937091 is an apocalyptic number.

68937091 is a deficient number, since it is larger than the sum of its proper divisors (4436813).

68937091 is a wasteful number, since it uses less digits than its factorization.

68937091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21221.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 68937091 is about 8302.8363226069. The cubic root of 68937091 is about 410.0319051119.

The spelling of 68937091 in words is "sixty-eight million, nine hundred thirty-seven thousand, ninety-one".