36691901 has 8 divisors (see below), whose sum is σ = 37792824. Its totient is φ = 35596800.

The previous prime is 36691883. The next prime is 36691903. The reversal of 36691901 is 10919663.

It can be written as a sum of positive squares in 4 ways, for example, as 28879876 + 7812025 = 5374^2 + 2795^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36691901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36691903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13601 + ... + 16073.

It is an arithmetic number, because the mean of its divisors is an integer number (4724103).

Almost surely, 2^36691901 is an apocalyptic number.

36691901 is the 4946-th pentagonal number.

It is an amenable number.

36691901 is a deficient number, since it is larger than the sum of its proper divisors (1100923).

36691901 is a wasteful number, since it uses less digits than its factorization.

36691901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 36691901 is about 6057.3840063182. The cubic root of 36691901 is about 332.2946922578.

The spelling of 36691901 in words is "thirty-six million, six hundred ninety-one thousand, nine hundred one".