73371665 has 8 divisors (see below), whose sum is σ = 88494120. Its totient is φ = 58398592.

The previous prime is 73371647. The next prime is 73371667. The reversal of 73371665 is 56617337.

It can be written as a sum of positive squares in 4 ways, for example, as 32398864 + 40972801 = 5692^2 + 6401^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 73371665 - 2⁶ = 73371601 is a prime.

It is a super-3 number, since 3×73371665³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (73371667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36260 + ... + 38229.

It is an arithmetic number, because the mean of its divisors is an integer number (11061765).

Almost surely, 2^73371665 is an apocalyptic number.

It is an amenable number.

73371665 is a deficient number, since it is larger than the sum of its proper divisors (15122455).

73371665 is a wasteful number, since it uses less digits than its factorization.

73371665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74691.

The product of its digits is 79380, while the sum is 38.

The square root of 73371665 is about 8565.7261805407. The cubic root of 73371665 is about 418.6419951648.

The spelling of 73371665 in words is "seventy-three million, three hundred seventy-one thousand, six hundred sixty-five".