72680987 has 8 divisors (see below), whose sum is σ = 76467552. Its totient is φ = 68990400.

The previous prime is 72680939. The next prime is 72680999. The reversal of 72680987 is 78908627.

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 72680987 - 2¹⁰ = 72679963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72680887) 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, 22439 + ... + 25472.

It is an arithmetic number, because the mean of its divisors is an integer number (9558444).

Almost surely, 2^72680987 is an apocalyptic number.

72680987 is a deficient number, since it is larger than the sum of its proper divisors (3786565).

72680987 is a wasteful number, since it uses less digits than its factorization.

72680987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47989.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 72680987 is about 8525.3144810030. The cubic root of 72680987 is about 417.3242345227.

The spelling of 72680987 in words is "seventy-two million, six hundred eighty thousand, nine hundred eighty-seven".