73366621 has 2 divisors, whose sum is σ = 73366622. Its totient is φ = 73366620.

The previous prime is 73366613. The next prime is 73366637. The reversal of 73366621 is 12666337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73359225 + 7396 = 8565^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 73366621 - 2³ = 73366613 is a prime.

It is a super-2 number, since 2×73366621² = 10765322153915282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73366661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36683310 + 36683311.

It is an arithmetic number, because the mean of its divisors is an integer number (36683311).

Almost surely, 2^73366621 is an apocalyptic number.

It is an amenable number.

73366621 is a deficient number, since it is larger than the sum of its proper divisors (1).

73366621 is an equidigital number, since it uses as much as digits as its factorization.

73366621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 73366621 is about 8565.4317462694. The cubic root of 73366621 is about 418.6324016402.

The spelling of 73366621 in words is "seventy-three million, three hundred sixty-six thousand, six hundred twenty-one".