36689521 has 8 divisors (see below), whose sum is σ = 40207104. Its totient is φ = 33202320.

The previous prime is 36689491. The next prime is 36689537. The reversal of 36689521 is 12598663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36689521 - 2⁵ = 36689489 is a prime.

It is a super-2 number, since 2×36689521² = 2692241902418882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36689561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5026 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (5025888).

Almost surely, 2^36689521 is an apocalyptic number.

It is an amenable number.

36689521 is a deficient number, since it is larger than the sum of its proper divisors (3517583).

36689521 is a wasteful number, since it uses less digits than its factorization.

36689521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15191.

The product of its digits is 77760, while the sum is 40.

The square root of 36689521 is about 6057.1875486896. The cubic root of 36689521 is about 332.2875073982.

The spelling of 36689521 in words is "thirty-six million, six hundred eighty-nine thousand, five hundred twenty-one".