68457156 has 24 divisors (see below), whose sum is σ = 160809600. Its totient is φ = 22665312.

The previous prime is 68457143. The next prime is 68457157. The reversal of 68457156 is 65175486.

It is a super-3 number, since 3×68457156³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68457157) 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, 17356 + ... + 20931.

It is an arithmetic number, because the mean of its divisors is an integer number (6700400).

Almost surely, 2^68457156 is an apocalyptic number.

It is an amenable number.

68457156 is an abundant number, since it is smaller than the sum of its proper divisors (92352444).

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

68457156 is a wasteful number, since it uses less digits than its factorization.

68457156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38443 (or 38441 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 68457156 is about 8273.8839730806. The cubic root of 68457156 is about 409.0781509467.

The spelling of 68457156 in words is "sixty-eight million, four hundred fifty-seven thousand, one hundred fifty-six".