73523661 has 16 divisors (see below), whose sum is σ = 102136320. Its totient is φ = 46992960.

The previous prime is 73523609. The next prime is 73523669. The reversal of 73523661 is 16632537.

It is not a de Polignac number, because 73523661 - 2¹³ = 73515469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73523669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6511 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (6383520).

Almost surely, 2^73523661 is an apocalyptic number.

It is an amenable number.

73523661 is a deficient number, since it is larger than the sum of its proper divisors (28612659).

73523661 is a wasteful number, since it uses less digits than its factorization.

73523661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396.

The product of its digits is 22680, while the sum is 33.

The square root of 73523661 is about 8574.5939262451. The cubic root of 73523661 is about 418.9308806151.

The spelling of 73523661 in words is "seventy-three million, five hundred twenty-three thousand, six hundred sixty-one".