36868261 has 2 divisors, whose sum is σ = 36868262. Its totient is φ = 36868260.

The previous prime is 36868219. The next prime is 36868277. The reversal of 36868261 is 16286863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32433025 + 4435236 = 5695^2 + 2106^2 .

It is a cyclic number.

It is not a de Polignac number, because 36868261 - 2¹⁵ = 36835493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36868361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18434130 + 18434131.

It is an arithmetic number, because the mean of its divisors is an integer number (18434131).

Almost surely, 2^36868261 is an apocalyptic number.

It is an amenable number.

36868261 is a deficient number, since it is larger than the sum of its proper divisors (1).

36868261 is an equidigital number, since it uses as much as digits as its factorization.

36868261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 36868261 is about 6071.9239949130. The cubic root of 36868261 is about 332.8262341647.

The spelling of 36868261 in words is "thirty-six million, eight hundred sixty-eight thousand, two hundred sixty-one".