68157560 has 32 divisors (see below), whose sum is σ = 161427600. Its totient is φ = 25827840.

The previous prime is 68157553. The next prime is 68157563. The reversal of 68157560 is 6575186.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68157563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44081 + ... + 45600.

Almost surely, 2^68157560 is an apocalyptic number.

It is an amenable number.

68157560 is an abundant number, since it is smaller than the sum of its proper divisors (93270040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68157560 is a wasteful number, since it uses less digits than its factorization.

68157560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89711 (or 89707 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 68157560 is about 8255.7592019147. The cubic root of 68157560 is about 408.4805148544.

The spelling of 68157560 in words is "sixty-eight million, one hundred fifty-seven thousand, five hundred sixty".