73985816 has 16 divisors (see below), whose sum is σ = 138834240. Its totient is φ = 36963360.

The previous prime is 73985803. The next prime is 73985831. The reversal of 73985816 is 61858937.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9881 + ... + 15671.

It is an arithmetic number, because the mean of its divisors is an integer number (8677140).

Almost surely, 2^73985816 is an apocalyptic number.

It is an amenable number.

73985816 is a deficient number, since it is larger than the sum of its proper divisors (64848424).

73985816 is a wasteful number, since it uses less digits than its factorization.

73985816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7394 (or 7390 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 73985816 is about 8601.5007992792. The cubic root of 73985816 is about 419.8068197009.

The spelling of 73985816 in words is "seventy-three million, nine hundred eighty-five thousand, eight hundred sixteen".