68837861 has 2 divisors, whose sum is σ = 68837862. Its totient is φ = 68837860.

The previous prime is 68837849. The next prime is 68837897. The reversal of 68837861 is 16873886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56100100 + 12737761 = 7490^2 + 3569^2 .

It is a cyclic number.

It is not a de Polignac number, because 68837861 - 2¹⁰ = 68836837 is a prime.

It is a super-2 number, since 2×68837861² = 9477302214110642, 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 (68837801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34418930 + 34418931.

It is an arithmetic number, because the mean of its divisors is an integer number (34418931).

Almost surely, 2^68837861 is an apocalyptic number.

It is an amenable number.

68837861 is a deficient number, since it is larger than the sum of its proper divisors (1).

68837861 is an equidigital number, since it uses as much as digits as its factorization.

68837861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 68837861 is about 8296.8585018668. The cubic root of 68837861 is about 409.8350734633.

The spelling of 68837861 in words is "sixty-eight million, eight hundred thirty-seven thousand, eight hundred sixty-one".