68277491 has 8 divisors (see below), whose sum is σ = 72959040. Its totient is φ = 63669888.

The previous prime is 68277487. The next prime is 68277499. The reversal of 68277491 is 19477286.

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 68277491 - 2² = 68277487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68277499) 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, 16571 + ... + 20276.

It is an arithmetic number, because the mean of its divisors is an integer number (9119880).

Almost surely, 2^68277491 is an apocalyptic number.

68277491 is a deficient number, since it is larger than the sum of its proper divisors (4681549).

68277491 is a wasteful number, since it uses less digits than its factorization.

68277491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36973.

The product of its digits is 169344, while the sum is 44.

The square root of 68277491 is about 8263.0194844258. The cubic root of 68277491 is about 408.7199638140.

The spelling of 68277491 in words is "sixty-eight million, two hundred seventy-seven thousand, four hundred ninety-one".