73764881 has 4 divisors (see below), whose sum is σ = 73852212. Its totient is φ = 73677552.

The previous prime is 73764869. The next prime is 73764959. The reversal of 73764881 is 18846737.

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 2531281 + 71233600 = 1591^2 + 8440^2 .

It is a cyclic number.

It is not a de Polignac number, because 73764881 - 2²² = 69570577 is a prime.

It is a super-2 number, since 2×73764881² = 10882515337888322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73764851) 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, 42386 + ... + 44091.

It is an arithmetic number, because the mean of its divisors is an integer number (18463053).

Almost surely, 2^73764881 is an apocalyptic number.

It is an amenable number.

73764881 is a deficient number, since it is larger than the sum of its proper divisors (87331).

73764881 is an equidigital number, since it uses as much as digits as its factorization.

73764881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87330.

The product of its digits is 225792, while the sum is 44.

The square root of 73764881 is about 8588.6483802750. The cubic root of 73764881 is about 419.3885300838.

The spelling of 73764881 in words is "seventy-three million, seven hundred sixty-four thousand, eight hundred eighty-one".