72870583 has 4 divisors (see below), whose sum is σ = 72893008. Its totient is φ = 72848160.

The previous prime is 72870569. The next prime is 72870593. The reversal of 72870583 is 38507827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72870583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72870503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5298 + ... + 13183.

It is an arithmetic number, because the mean of its divisors is an integer number (18223252).

Almost surely, 2^72870583 is an apocalyptic number.

72870583 is a deficient number, since it is larger than the sum of its proper divisors (22425).

72870583 is a wasteful number, since it uses less digits than its factorization.

72870583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22424.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 72870583 is about 8536.4268285975. The cubic root of 72870583 is about 417.6867974989.

The spelling of 72870583 in words is "seventy-two million, eight hundred seventy thousand, five hundred eighty-three".