72982681 has 8 divisors (see below), whose sum is σ = 74790144. Its totient is φ = 71185920.

The previous prime is 72982633. The next prime is 72982687. The reversal of 72982681 is 18628927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72982681 - 2²³ = 64594073 is a prime.

It is a super-2 number, since 2×72982681² = 10652943451895522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72982687) 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 7 ways as a sum of consecutive naturals, for example, 12121 + ... + 17113.

It is an arithmetic number, because the mean of its divisors is an integer number (9348768).

Almost surely, 2^72982681 is an apocalyptic number.

It is an amenable number.

72982681 is a deficient number, since it is larger than the sum of its proper divisors (1807463).

72982681 is a wasteful number, since it uses less digits than its factorization.

72982681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351.

The product of its digits is 96768, while the sum is 43.

The square root of 72982681 is about 8542.9901673828. The cubic root of 72982681 is about 417.9008658936.

The spelling of 72982681 in words is "seventy-two million, nine hundred eighty-two thousand, six hundred eighty-one".