36951621 has 16 divisors (see below), whose sum is σ = 56716800. Its totient is φ = 20961648.

The previous prime is 36951617. The next prime is 36951623. The reversal of 36951621 is 12615963.

It is a happy number.

36951621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36951621 - 2² = 36951617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36951623) 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 15 ways as a sum of consecutive naturals, for example, 3411 + ... + 9248.

It is an arithmetic number, because the mean of its divisors is an integer number (3544800).

Almost surely, 2^36951621 is an apocalyptic number.

It is an amenable number.

36951621 is a deficient number, since it is larger than the sum of its proper divisors (19765179).

36951621 is a wasteful number, since it uses less digits than its factorization.

36951621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808.

The product of its digits is 9720, while the sum is 33.

The square root of 36951621 is about 6078.7845002105. The cubic root of 36951621 is about 333.0768879802.

The spelling of 36951621 in words is "thirty-six million, nine hundred fifty-one thousand, six hundred twenty-one".