68535523 has 4 divisors (see below), whose sum is σ = 78326320. Its totient is φ = 58744728.

The previous prime is 68535499. The next prime is 68535547. The reversal of 68535523 is 32553586.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68535499) and next prime (68535547).

It is not a de Polignac number, because 68535523 - 2⁵ = 68535491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68535553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4895388 + ... + 4895401.

It is an arithmetic number, because the mean of its divisors is an integer number (19581580).

Almost surely, 2^68535523 is an apocalyptic number.

68535523 is a deficient number, since it is larger than the sum of its proper divisors (9790797).

68535523 is an equidigital number, since it uses as much as digits as its factorization.

68535523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9790796.

The product of its digits is 108000, while the sum is 37.

The square root of 68535523 is about 8278.6184233844. The cubic root of 68535523 is about 409.2341901597.

The spelling of 68535523 in words is "sixty-eight million, five hundred thirty-five thousand, five hundred twenty-three".