68134491 has 12 divisors (see below), whose sum is σ = 98704632. Its totient is φ = 45290016.

The previous prime is 68134471. The next prime is 68134519. The reversal of 68134491 is 19443186.

It is not a de Polignac number, because 68134491 - 2⁵ = 68134459 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68134411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7786 + ... + 14031.

It is an arithmetic number, because the mean of its divisors is an integer number (8225386).

Almost surely, 2^68134491 is an apocalyptic number.

68134491 is a deficient number, since it is larger than the sum of its proper divisors (30570141).

68134491 is a wasteful number, since it uses less digits than its factorization.

68134491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22170 (or 22167 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 68134491 is about 8254.3619377878. The cubic root of 68134491 is about 408.4344240987.

The spelling of 68134491 in words is "sixty-eight million, one hundred thirty-four thousand, four hundred ninety-one".