36968021 has 2 divisors, whose sum is σ = 36968022. Its totient is φ = 36968020.

The previous prime is 36967993. The next prime is 36968059. The reversal of 36968021 is 12086963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32604100 + 4363921 = 5710^2 + 2089^2 .

It is a cyclic number.

It is not a de Polignac number, because 36968021 - 2²² = 32773717 is a prime.

It is a Chen prime.

It is equal to p_2259764 and since 36968021 and 2259764 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36968221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18484010 + 18484011.

It is an arithmetic number, because the mean of its divisors is an integer number (18484011).

Almost surely, 2^36968021 is an apocalyptic number.

It is an amenable number.

36968021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36968021 is an equidigital number, since it uses as much as digits as its factorization.

36968021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 36968021 is about 6080.1333044597. The cubic root of 36968021 is about 333.1261564822.

The spelling of 36968021 in words is "thirty-six million, nine hundred sixty-eight thousand, twenty-one".