73885581 has 48 divisors (see below), whose sum is σ = 138934080. Its totient is φ = 38374560.

The previous prime is 73885577. The next prime is 73885583. The reversal of 73885581 is 18558837.

It is a happy number.

It is not a de Polignac number, because 73885581 - 2² = 73885577 is a prime.

It is a super-2 number, since 2×73885581² = 10918158159415122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73885583) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12015 + ... + 17091.

It is an arithmetic number, because the mean of its divisors is an integer number (2894460).

Almost surely, 2^73885581 is an apocalyptic number.

It is an amenable number.

73885581 is a deficient number, since it is larger than the sum of its proper divisors (65048499).

73885581 is a wasteful number, since it uses less digits than its factorization.

73885581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111 (or 5098 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 73885581 is about 8595.6722250211. The cubic root of 73885581 is about 419.6171511221.

The spelling of 73885581 in words is "seventy-three million, eight hundred eighty-five thousand, five hundred eighty-one".