36531637 has 4 divisors (see below), whose sum is σ = 36695680. Its totient is φ = 36367596.

The previous prime is 36531629. The next prime is 36531647. The reversal of 36531637 is 73613563.

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: 73613563 = 773 ⋅95231.

It is a cyclic number.

It is not a de Polignac number, because 36531637 - 2³ = 36531629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36531647) 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, 81687 + ... + 82132.

It is an arithmetic number, because the mean of its divisors is an integer number (9173920).

Almost surely, 2^36531637 is an apocalyptic number.

It is an amenable number.

36531637 is a deficient number, since it is larger than the sum of its proper divisors (164043).

36531637 is a wasteful number, since it uses less digits than its factorization.

36531637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164042.

The product of its digits is 34020, while the sum is 34.

The square root of 36531637 is about 6044.1407164294. The cubic root of 36531637 is about 331.8101838704.

The spelling of 36531637 in words is "thirty-six million, five hundred thirty-one thousand, six hundred thirty-seven".