73805765 has 12 divisors (see below), whose sum is σ = 97351212. Its totient is φ = 53676480.

The previous prime is 73805749. The next prime is 73805777. The reversal of 73805765 is 56750837.

It can be written as a sum of positive squares in 2 ways, for example, as 26388769 + 47416996 = 5137^2 + 6886^2 .

It is not a de Polignac number, because 73805765 - 2⁴ = 73805749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60392 + ... + 61601.

It is an arithmetic number, because the mean of its divisors is an integer number (8112601).

Almost surely, 2^73805765 is an apocalyptic number.

It is an amenable number.

73805765 is a deficient number, since it is larger than the sum of its proper divisors (23545447).

73805765 is a wasteful number, since it uses less digits than its factorization.

73805765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122020 (or 122009 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 73805765 is about 8591.0281689679. The cubic root of 73805765 is about 419.4659974533.

It can be divided in two parts, 7380 and 5765, that multiplied together give a triangular number (42545700 = T₉₂₂₄).

The spelling of 73805765 in words is "seventy-three million, eight hundred five thousand, seven hundred sixty-five".