68957140 has 24 divisors (see below), whose sum is σ = 165497472. Its totient is φ = 23642400.

The previous prime is 68957129. The next prime is 68957143. The reversal of 68957140 is 4175986.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68957093 and 68957102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68957143) 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, 246136 + ... + 246415.

It is an arithmetic number, because the mean of its divisors is an integer number (6895728).

Almost surely, 2^68957140 is an apocalyptic number.

It is an amenable number.

68957140 is an abundant number, since it is smaller than the sum of its proper divisors (96540332).

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

68957140 is a wasteful number, since it uses less digits than its factorization.

68957140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492567 (or 492565 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 68957140 is about 8304.0435933345. The cubic root of 68957140 is about 410.0716511698.

The spelling of 68957140 in words is "sixty-eight million, nine hundred fifty-seven thousand, one hundred forty".