36663973 has 2 divisors, whose sum is σ = 36663974. Its totient is φ = 36663972.

The previous prime is 36663971. The next prime is 36664013. The reversal of 36663973 is 37936663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36204289 + 459684 = 6017^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 36663973 - 2¹ = 36663971 is a prime.

It is a super-2 number, since 2×36663973² = 2688493832289458, which contains 22 as substring.

Together with 36663971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36663971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18331986 + 18331987.

It is an arithmetic number, because the mean of its divisors is an integer number (18331987).

Almost surely, 2^36663973 is an apocalyptic number.

It is an amenable number.

36663973 is a deficient number, since it is larger than the sum of its proper divisors (1).

36663973 is an equidigital number, since it uses as much as digits as its factorization.

36663973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 43.

The square root of 36663973 is about 6055.0782819052. The cubic root of 36663973 is about 332.2103622787.

It can be divided in two parts, 36663 and 973, that added together give a square (37636 = 194²).

The spelling of 36663973 in words is "thirty-six million, six hundred sixty-three thousand, nine hundred seventy-three".