36645641 has 2 divisors, whose sum is σ = 36645642. Its totient is φ = 36645640.

The previous prime is 36645619. The next prime is 36645671. The reversal of 36645641 is 14654663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28783225 + 7862416 = 5365^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 36645641 - 2¹⁰ = 36644617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36645671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18322820 + 18322821.

It is an arithmetic number, because the mean of its divisors is an integer number (18322821).

Almost surely, 2^36645641 is an apocalyptic number.

It is an amenable number.

36645641 is a deficient number, since it is larger than the sum of its proper divisors (1).

36645641 is an equidigital number, since it uses as much as digits as its factorization.

36645641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 36645641 is about 6053.5643219512. The cubic root of 36645641 is about 332.1549846135.

The spelling of 36645641 in words is "thirty-six million, six hundred forty-five thousand, six hundred forty-one".