68913523 has 16 divisors (see below), whose sum is σ = 80303616. Its totient is φ = 57919680.

The previous prime is 68913521. The next prime is 68913547. The reversal of 68913523 is 32531986.

It is not a de Polignac number, because 68913523 - 2¹ = 68913521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68913521) 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, 155340 + ... + 155782.

It is an arithmetic number, because the mean of its divisors is an integer number (5018976).

Almost surely, 2^68913523 is an apocalyptic number.

68913523 is a deficient number, since it is larger than the sum of its proper divisors (11390093).

68913523 is a wasteful number, since it uses less digits than its factorization.

68913523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its digits is 38880, while the sum is 37.

The square root of 68913523 is about 8301.4169272480. The cubic root of 68913523 is about 409.9851729716.

The spelling of 68913523 in words is "sixty-eight million, nine hundred thirteen thousand, five hundred twenty-three".