72850689 has 6 divisors (see below), whose sum is σ = 105228786. Its totient is φ = 48567120.

The previous prime is 72850667. The next prime is 72850703. The reversal of 72850689 is 98605827.

It can be written as a sum of positive squares in only one way, i.e., 50126400 + 22724289 = 7080^2 + 4767^2 .

It is not a de Polignac number, because 72850689 - 2²¹ = 70753537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72850619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4047252 + ... + 4047269.

It is an arithmetic number, because the mean of its divisors is an integer number (17538131).

Almost surely, 2^72850689 is an apocalyptic number.

It is an amenable number.

72850689 is a deficient number, since it is larger than the sum of its proper divisors (32378097).

72850689 is a wasteful number, since it uses less digits than its factorization.

72850689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8094527 (or 8094524 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 72850689 is about 8535.2615074173. The cubic root of 72850689 is about 417.6487839087.

The spelling of 72850689 in words is "seventy-two million, eight hundred fifty thousand, six hundred eighty-nine".