73840511 has 4 divisors (see below), whose sum is σ = 77050992. Its totient is φ = 70630032.

The previous prime is 73840477. The next prime is 73840513. The reversal of 73840511 is 11504837.

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

It is a cyclic number.

It is not a de Polignac number, because 73840511 - 2¹⁰ = 73839487 is a prime.

It is a super-2 number, since 2×73840511² = 10904842129482242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73840513) 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, 1605206 + ... + 1605251.

It is an arithmetic number, because the mean of its divisors is an integer number (19262748).

Almost surely, 2^73840511 is an apocalyptic number.

73840511 is a deficient number, since it is larger than the sum of its proper divisors (3210481).

73840511 is a wasteful number, since it uses less digits than its factorization.

73840511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210480.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 73840511 is about 8593.0501569582. The cubic root of 73840511 is about 419.5318120004.

The spelling of 73840511 in words is "seventy-three million, eight hundred forty thousand, five hundred eleven".