86838761 has 2 divisors, whose sum is σ = 86838762. Its totient is φ = 86838760.

The previous prime is 86838757. The next prime is 86838769. The reversal of 86838761 is 16783868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78659161 + 8179600 = 8869^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 86838761 - 2² = 86838757 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86838769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43419380 + 43419381.

It is an arithmetic number, because the mean of its divisors is an integer number (43419381).

Almost surely, 2^86838761 is an apocalyptic number.

It is an amenable number.

86838761 is a deficient number, since it is larger than the sum of its proper divisors (1).

86838761 is an equidigital number, since it uses as much as digits as its factorization.

86838761 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 86838761 is about 9318.7317270109. The cubic root of 86838761 is about 442.8308543089.

The spelling of 86838761 in words is "eighty-six million, eight hundred thirty-eight thousand, seven hundred sixty-one".