72485689 has 4 divisors (see below), whose sum is σ = 73714320. Its totient is φ = 71257060.

The previous prime is 72485681. The next prime is 72485711. The reversal of 72485689 is 98658427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98658427 = 7 ⋅14094061.

It is a cyclic number.

It is not a de Polignac number, because 72485689 - 2³ = 72485681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72485681) 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 3 ways as a sum of consecutive naturals, for example, 614227 + ... + 614344.

It is an arithmetic number, because the mean of its divisors is an integer number (18428580).

Almost surely, 2^72485689 is an apocalyptic number.

It is an amenable number.

72485689 is a deficient number, since it is larger than the sum of its proper divisors (1228631).

72485689 is a wasteful number, since it uses less digits than its factorization.

72485689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228630.

The product of its digits is 967680, while the sum is 49.

The square root of 72485689 is about 8513.8527706321. The cubic root of 72485689 is about 416.9501078008.

The spelling of 72485689 in words is "seventy-two million, four hundred eighty-five thousand, six hundred eighty-nine".