73665522 has 90 divisors (see below), whose sum is σ = 197271243. Its totient is φ = 19809216.

The previous prime is 73665521. The next prime is 73665523. The reversal of 73665522 is 22556637.

It is a happy number.

73665522 is a `hidden beast` number, since 73 + 6 + 65 + 522 = 666.

It is an interprime number because it is at equal distance from previous prime (73665521) and next prime (73665523).

It can be written as a sum of positive squares in 3 ways, for example, as 70913241 + 2752281 = 8421^2 + 1659^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6069.

Its product of digits (75600) is a multiple of the sum of its prime factors (90).

It is not an unprimeable number, because it can be changed into a prime (73665521) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 4333258 + ... + 4333274.

Almost surely, 2^73665522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73665522

73665522 is an abundant number, since it is smaller than the sum of its proper divisors (123605721).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73665522 is an equidigital number, since it uses as much as digits as its factorization.

73665522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 29 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 73665522 is about 8582.8621100423. The cubic root of 73665522 is about 419.2001443741.

The spelling of 73665522 in words is "seventy-three million, six hundred sixty-five thousand, five hundred twenty-two".