36671721 has 8 divisors (see below), whose sum is σ = 49514880. Its totient is φ = 24138192.

The previous prime is 36671717. The next prime is 36671743. The reversal of 36671721 is 12717663.

36671721 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 not a de Polignac number, because 36671721 - 2² = 36671717 is a prime.

It is a super-2 number, since 2×36671721² = 2689630242203682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36671021) 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, 77130 + ... + 77603.

It is an arithmetic number, because the mean of its divisors is an integer number (6189360).

Almost surely, 2^36671721 is an apocalyptic number.

It is an amenable number.

36671721 is a deficient number, since it is larger than the sum of its proper divisors (12843159).

36671721 is a wasteful number, since it uses less digits than its factorization.

36671721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154815.

The product of its digits is 10584, while the sum is 33.

The square root of 36671721 is about 6055.7180416529. The cubic root of 36671721 is about 332.2337620395.

The spelling of 36671721 in words is "thirty-six million, six hundred seventy-one thousand, seven hundred twenty-one".