73481665 has 8 divisors (see below), whose sum is σ = 92011968. Its totient is φ = 56229360.

The previous prime is 73481627. The next prime is 73481747. The reversal of 73481665 is 56618437.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73481665 - 2⁹ = 73481153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319371 + ... + 319600.

It is an arithmetic number, because the mean of its divisors is an integer number (11501496).

Almost surely, 2^73481665 is an apocalyptic number.

It is an amenable number.

73481665 is a deficient number, since it is larger than the sum of its proper divisors (18530303).

73481665 is a wasteful number, since it uses less digits than its factorization.

73481665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638999.

The product of its digits is 120960, while the sum is 40.

The square root of 73481665 is about 8572.1447141308. The cubic root of 73481665 is about 418.8511023423.

The spelling of 73481665 in words is "seventy-three million, four hundred eighty-one thousand, six hundred sixty-five".