68195731 has 8 divisors (see below), whose sum is σ = 73313280. Its totient is φ = 63231048.

The previous prime is 68195711. The next prime is 68195747. The reversal of 68195731 is 13759186.

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 68195731 - 2²³ = 59807123 is a prime.

It is a super-2 number, since 2×68195731² = 9301315453248722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68195711) 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, 37291 + ... + 39076.

It is an arithmetic number, because the mean of its divisors is an integer number (9164160).

Almost surely, 2^68195731 is an apocalyptic number.

68195731 is a deficient number, since it is larger than the sum of its proper divisors (5117549).

68195731 is a wasteful number, since it uses less digits than its factorization.

68195731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76433.

The product of its digits is 45360, while the sum is 40.

The square root of 68195731 is about 8258.0706584529. The cubic root of 68195731 is about 408.5567558461.

The spelling of 68195731 in words is "sixty-eight million, one hundred ninety-five thousand, seven hundred thirty-one".