73782331 has 4 divisors (see below), whose sum is σ = 84322672. Its totient is φ = 63241992.

The previous prime is 73782311. The next prime is 73782337. The reversal of 73782331 is 13328737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13328737 = 2477 ⋅5381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73782331 is a prime.

It is a super-2 number, since 2×73782331² = 10887664735587122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73782337) 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, 5270160 + ... + 5270173.

It is an arithmetic number, because the mean of its divisors is an integer number (21080668).

Almost surely, 2^73782331 is an apocalyptic number.

73782331 is a deficient number, since it is larger than the sum of its proper divisors (10540341).

73782331 is a wasteful number, since it uses less digits than its factorization.

73782331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10540340.

The product of its digits is 21168, while the sum is 34.

The square root of 73782331 is about 8589.6641959974. The cubic root of 73782331 is about 419.4215980006.

The spelling of 73782331 in words is "seventy-three million, seven hundred eighty-two thousand, three hundred thirty-one".