36643487 has 2 divisors, whose sum is σ = 36643488. Its totient is φ = 36643486.

The previous prime is 36643471. The next prime is 36643549. The reversal of 36643487 is 78434663.

It is a weak prime.

It is an emirp because it is prime and its reverse (78434663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36643487 - 2⁴ = 36643471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36645487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18321743 + 18321744.

It is an arithmetic number, because the mean of its divisors is an integer number (18321744).

Almost surely, 2^36643487 is an apocalyptic number.

36643487 is a deficient number, since it is larger than the sum of its proper divisors (1).

36643487 is an equidigital number, since it uses as much as digits as its factorization.

36643487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 36643487 is about 6053.3864076234. The cubic root of 36643487 is about 332.1484765557.

The spelling of 36643487 in words is "thirty-six million, six hundred forty-three thousand, four hundred eighty-seven".