68157535 has 16 divisors (see below), whose sum is σ = 83613600. Its totient is φ = 53323776.

The previous prime is 68157493. The next prime is 68157553. The reversal of 68157535 is 53575186.

It is a cyclic number.

It is not a de Polignac number, because 68157535 - 2⁷ = 68157407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42376 + ... + 43954.

It is an arithmetic number, because the mean of its divisors is an integer number (5225850).

Almost surely, 2^68157535 is an apocalyptic number.

68157535 is a deficient number, since it is larger than the sum of its proper divisors (15456065).

68157535 is a wasteful number, since it uses less digits than its factorization.

68157535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770.

The product of its digits is 126000, while the sum is 40.

The square root of 68157535 is about 8255.7576878201. The cubic root of 68157535 is about 408.4804649112.

The spelling of 68157535 in words is "sixty-eight million, one hundred fifty-seven thousand, five hundred thirty-five".