36682561 has 4 divisors (see below), whose sum is σ = 36856624. Its totient is φ = 36508500.

The previous prime is 36682543. The next prime is 36682571. The reversal of 36682561 is 16528663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16528663 = 131 ⋅126173.

It is a cyclic number.

It is not a de Polignac number, because 36682561 - 2⁹ = 36682049 is a prime.

It is a super-2 number, since 2×36682561² = 2691220563037442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36682561.

It is not an unprimeable number, because it can be changed into a prime (36682511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86715 + ... + 87136.

It is an arithmetic number, because the mean of its divisors is an integer number (9214156).

Almost surely, 2^36682561 is an apocalyptic number.

It is an amenable number.

36682561 is a deficient number, since it is larger than the sum of its proper divisors (174063).

36682561 is a wasteful number, since it uses less digits than its factorization.

36682561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174062.

The product of its digits is 51840, while the sum is 37.

The square root of 36682561 is about 6056.6129973773. The cubic root of 36682561 is about 332.2664944291.

The spelling of 36682561 in words is "thirty-six million, six hundred eighty-two thousand, five hundred sixty-one".