36516721 has 8 divisors (see below), whose sum is σ = 36892800. Its totient is φ = 36142848.

The previous prime is 36516679. The next prime is 36516737. The reversal of 36516721 is 12761563.

36516721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 36516721 - 2⁷ = 36516593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36516751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74740 + ... + 75226.

It is an arithmetic number, because the mean of its divisors is an integer number (4611600).

Almost surely, 2^36516721 is an apocalyptic number.

It is an amenable number.

36516721 is a deficient number, since it is larger than the sum of its proper divisors (376079).

36516721 is a wasteful number, since it uses less digits than its factorization.

36516721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103.

The product of its digits is 7560, while the sum is 31.

The square root of 36516721 is about 6042.9066681523. The cubic root of 36516721 is about 331.7650179552.

The spelling of 36516721 in words is "thirty-six million, five hundred sixteen thousand, seven hundred twenty-one".