73981985 has 16 divisors (see below), whose sum is σ = 110685312. Its totient is φ = 46118400.

The previous prime is 73981979. The next prime is 73981993. The reversal of 73981985 is 58918937.

It is not a de Polignac number, because 73981985 - 2⁴ = 73981969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95696 + ... + 96465.

It is an arithmetic number, because the mean of its divisors is an integer number (6917832).

Almost surely, 2^73981985 is an apocalyptic number.

It is an amenable number.

73981985 is a deficient number, since it is larger than the sum of its proper divisors (36703327).

73981985 is a wasteful number, since it uses less digits than its factorization.

73981985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192184.

The product of its digits is 544320, while the sum is 50.

The square root of 73981985 is about 8601.2781027008. The cubic root of 73981985 is about 419.7995736828.

The spelling of 73981985 in words is "seventy-three million, nine hundred eighty-one thousand, nine hundred eighty-five".