72092605 has 8 divisors (see below), whose sum is σ = 93165912. Its totient is φ = 53237568.

The previous prime is 72092591. The next prime is 72092609. The reversal of 72092605 is 50629027.

It can be written as a sum of positive squares in 4 ways, for example, as 4901796 + 67190809 = 2214^2 + 8197^2 .

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 72092605 - 2¹³ = 72084413 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 (72092609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554494 + ... + 554623.

It is an arithmetic number, because the mean of its divisors is an integer number (11645739).

Almost surely, 2^72092605 is an apocalyptic number.

It is an amenable number.

72092605 is a deficient number, since it is larger than the sum of its proper divisors (21073307).

72092605 is a wasteful number, since it uses less digits than its factorization.

72092605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109135.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 72092605 is about 8490.7364227139. The cubic root of 72092605 is about 416.1950457561.

The spelling of 72092605 in words is "seventy-two million, ninety-two thousand, six hundred five".