68792981 has 2 divisors, whose sum is σ = 68792982. Its totient is φ = 68792980.

The previous prime is 68792951. The next prime is 68793013. The reversal of 68792981 is 18929786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37332100 + 31460881 = 6110^2 + 5609^2 .

It is a cyclic number.

It is not a de Polignac number, because 68792981 - 2¹⁴ = 68776597 is a prime.

It is a super-2 number, since 2×68792981² = 9464948469732722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68792951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34396490 + 34396491.

It is an arithmetic number, because the mean of its divisors is an integer number (34396491).

Almost surely, 2^68792981 is an apocalyptic number.

It is an amenable number.

68792981 is a deficient number, since it is larger than the sum of its proper divisors (1).

68792981 is an equidigital number, since it uses as much as digits as its factorization.

68792981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The square root of 68792981 is about 8294.1534227430. The cubic root of 68792981 is about 409.7459878130.

The spelling of 68792981 in words is "sixty-eight million, seven hundred ninety-two thousand, nine hundred eighty-one".