68492281 has 8 divisors (see below), whose sum is σ = 80466624. Its totient is φ = 57475920.

The previous prime is 68492267. The next prime is 68492293. The reversal of 68492281 is 18229486.

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 68492281 - 2¹³ = 68484089 is a prime.

It is a super-2 number, since 2×68492281² = 9382385113165922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68492231) 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, 239341 + ... + 239626.

It is an arithmetic number, because the mean of its divisors is an integer number (10058328).

Almost surely, 2^68492281 is an apocalyptic number.

It is an amenable number.

68492281 is a deficient number, since it is larger than the sum of its proper divisors (11974343).

68492281 is a wasteful number, since it uses less digits than its factorization.

68492281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478991.

The product of its digits is 55296, while the sum is 40.

The square root of 68492281 is about 8276.0063436418. The cubic root of 68492281 is about 409.1481042531.

The spelling of 68492281 in words is "sixty-eight million, four hundred ninety-two thousand, two hundred eighty-one".