36625621 has 2 divisors, whose sum is σ = 36625622. Its totient is φ = 36625620.

The previous prime is 36625619. The next prime is 36625627. The reversal of 36625621 is 12652663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36120100 + 505521 = 6010^2 + 711^2 .

It is an emirp because it is prime and its reverse (12652663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36625621 - 2¹ = 36625619 is a prime.

It is a super-2 number, since 2×36625621² = 2682872227271282, which contains 22 as substring.

Together with 36625619, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36625627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18312810 + 18312811.

It is an arithmetic number, because the mean of its divisors is an integer number (18312811).

Almost surely, 2^36625621 is an apocalyptic number.

It is an amenable number.

36625621 is a deficient number, since it is larger than the sum of its proper divisors (1).

36625621 is an equidigital number, since it uses as much as digits as its factorization.

36625621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 36625621 is about 6051.9105247847. The cubic root of 36625621 is about 332.0944867032.

The spelling of 36625621 in words is "thirty-six million, six hundred twenty-five thousand, six hundred twenty-one".