73991085 has 32 divisors (see below), whose sum is σ = 136657152. Its totient is φ = 33484800.

The previous prime is 73991081. The next prime is 73991087. The reversal of 73991085 is 58019937.

It is a happy number.

It is not a de Polignac number, because 73991085 - 2² = 73991081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73991081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7117 + ... + 14093.

It is an arithmetic number, because the mean of its divisors is an integer number (4270536).

Almost surely, 2^73991085 is an apocalyptic number.

It is an amenable number.

73991085 is a deficient number, since it is larger than the sum of its proper divisors (62666067).

73991085 is a wasteful number, since it uses less digits than its factorization.

73991085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7093.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 73991085 is about 8601.8070775855. The cubic root of 73991085 is about 419.8167851680.

The spelling of 73991085 in words is "seventy-three million, nine hundred ninety-one thousand, eighty-five".