36989661 has 8 divisors (see below), whose sum is σ = 49359424. Its totient is φ = 24639840.

The previous prime is 36989657. The next prime is 36989699. The reversal of 36989661 is 16698963.

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

It is not a de Polignac number, because 36989661 - 2² = 36989657 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 36989661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36989261) 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, 81 + ... + 8601.

It is an arithmetic number, because the mean of its divisors is an integer number (6169928).

Almost surely, 2^36989661 is an apocalyptic number.

It is an amenable number.

36989661 is a deficient number, since it is larger than the sum of its proper divisors (12369763).

36989661 is a wasteful number, since it uses less digits than its factorization.

36989661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971.

The product of its digits is 419904, while the sum is 48.

The square root of 36989661 is about 6081.9126103554. The cubic root of 36989661 is about 333.1911445779.

The spelling of 36989661 in words is "thirty-six million, nine hundred eighty-nine thousand, six hundred sixty-one".