68914581 has 16 divisors (see below), whose sum is σ = 95083008. Its totient is φ = 44352000.

The previous prime is 68914579. The next prime is 68914589. The reversal of 68914581 is 18541986.

It is not a de Polignac number, because 68914581 - 2¹ = 68914579 is a prime.

It is a super-2 number, since 2×68914581² = 9498438948811122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68914589) 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 15 ways as a sum of consecutive naturals, for example, 56781 + ... + 57981.

It is an arithmetic number, because the mean of its divisors is an integer number (5942688).

Almost surely, 2^68914581 is an apocalyptic number.

It is an amenable number.

68914581 is a deficient number, since it is larger than the sum of its proper divisors (26168427).

68914581 is a wasteful number, since it uses less digits than its factorization.

68914581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its digits is 69120, while the sum is 42.

The square root of 68914581 is about 8301.4806510646. The cubic root of 68914581 is about 409.9872710702.

The spelling of 68914581 in words is "sixty-eight million, nine hundred fourteen thousand, five hundred eighty-one".