68081357 has 8 divisors (see below), whose sum is σ = 73491840. Its totient is φ = 62875120.

The previous prime is 68081347. The next prime is 68081359. The reversal of 68081357 is 75318086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68081357 - 2²⁶ = 972493 is a prime.

It is a super-2 number, since 2×68081357² = 9270142341922898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68081357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68081359) 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, 50369 + ... + 51702.

It is an arithmetic number, because the mean of its divisors is an integer number (9186480).

Almost surely, 2^68081357 is an apocalyptic number.

It is an amenable number.

68081357 is a deficient number, since it is larger than the sum of its proper divisors (5410483).

68081357 is a wasteful number, since it uses less digits than its factorization.

68081357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102123.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 68081357 is about 8251.1427693381. The cubic root of 68081357 is about 408.3282253237.

The spelling of 68081357 in words is "sixty-eight million, eighty-one thousand, three hundred fifty-seven".