73290761 has 4 divisors (see below), whose sum is σ = 73403652. Its totient is φ = 73177872.

The previous prime is 73290731. The next prime is 73290769. The reversal of 73290761 is 16709237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16709237 = 37 ⋅451601.

It can be written as a sum of positive squares in 2 ways, for example, as 18011536 + 55279225 = 4244^2 + 7435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73290761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73290769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55466 + ... + 56771.

It is an arithmetic number, because the mean of its divisors is an integer number (18350913).

Almost surely, 2^73290761 is an apocalyptic number.

It is an amenable number.

73290761 is a deficient number, since it is larger than the sum of its proper divisors (112891).

73290761 is a wasteful number, since it uses less digits than its factorization.

73290761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112890.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 73290761 is about 8561.0023361754. The cubic root of 73290761 is about 418.4880653130.

Adding to 73290761 its reverse (16709237), we get a palindrome (89999998).

The spelling of 73290761 in words is "seventy-three million, two hundred ninety thousand, seven hundred sixty-one".