73788865 has 4 divisors (see below), whose sum is σ = 88546644. Its totient is φ = 59031088.

The previous prime is 73788863. The next prime is 73788893. The reversal of 73788865 is 56888737.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45144961 + 28643904 = 6719^2 + 5352^2 .

It is a cyclic number.

It is not a de Polignac number, because 73788865 - 2¹ = 73788863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73788863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7378882 + ... + 7378891.

It is an arithmetic number, because the mean of its divisors is an integer number (22136661).

Almost surely, 2^73788865 is an apocalyptic number.

It is an amenable number.

73788865 is a deficient number, since it is larger than the sum of its proper divisors (14757779).

73788865 is a wasteful number, since it uses less digits than its factorization.

73788865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14757778.

The product of its digits is 2257920, while the sum is 52.

The square root of 73788865 is about 8590.0445284061. The cubic root of 73788865 is about 419.4339786514.

The spelling of 73788865 in words is "seventy-three million, seven hundred eighty-eight thousand, eight hundred sixty-five".