68262981 has 8 divisors (see below), whose sum is σ = 91099104. Its totient is φ = 45467760.

The previous prime is 68262979. The next prime is 68262989. The reversal of 68262981 is 18926286.

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

It is not a de Polignac number, because 68262981 - 2¹ = 68262979 is a prime.

It is a super-2 number, since 2×68262981² = 9319669150012722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68262989) 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, 6091 + ... + 13176.

It is an arithmetic number, because the mean of its divisors is an integer number (11387388).

Almost surely, 2^68262981 is an apocalyptic number.

It is an amenable number.

68262981 is a deficient number, since it is larger than the sum of its proper divisors (22836123).

68262981 is a wasteful number, since it uses less digits than its factorization.

68262981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20451.

The product of its digits is 82944, while the sum is 42.

The square root of 68262981 is about 8262.1414294358. The cubic root of 68262981 is about 408.6910087037.

The spelling of 68262981 in words is "sixty-eight million, two hundred sixty-two thousand, nine hundred eighty-one".