36867661 has 2 divisors, whose sum is σ = 36867662. Its totient is φ = 36867660.

The previous prime is 36867647. The next prime is 36867667. The reversal of 36867661 is 16676863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 17065161 = 4450^2 + 4131^2 .

It is a cyclic number.

It is not a de Polignac number, because 36867661 - 2⁷ = 36867533 is a prime.

It is a super-2 number, since 2×36867661² = 2718448855221842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36867667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18433830 + 18433831.

It is an arithmetic number, because the mean of its divisors is an integer number (18433831).

Almost surely, 2^36867661 is an apocalyptic number.

It is an amenable number.

36867661 is a deficient number, since it is larger than the sum of its proper divisors (1).

36867661 is an equidigital number, since it uses as much as digits as its factorization.

36867661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 36867661 is about 6071.8745869789. The cubic root of 36867661 is about 332.8244286657.

The spelling of 36867661 in words is "thirty-six million, eight hundred sixty-seven thousand, six hundred sixty-one".