73016641 has 4 divisors (see below), whose sum is σ = 73033812. Its totient is φ = 72999472.

The previous prime is 73016633. The next prime is 73016659. The reversal of 73016641 is 14661037.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 68956416 + 4060225 = 8304^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 73016641 - 2³ = 73016633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73016611) 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, 3051 + ... + 12463.

It is an arithmetic number, because the mean of its divisors is an integer number (18258453).

Almost surely, 2^73016641 is an apocalyptic number.

It is an amenable number.

73016641 is a deficient number, since it is larger than the sum of its proper divisors (17171).

73016641 is an equidigital number, since it uses as much as digits as its factorization.

73016641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 73016641 is about 8544.9775306902. The cubic root of 73016641 is about 417.9656744781.

Adding to 73016641 its reverse (14661037), we get a palindrome (87677678).

It can be divided in two parts, 730 and 16641, that added together give a palindrome (17371).

The spelling of 73016641 in words is "seventy-three million, sixteen thousand, six hundred forty-one".