72906485 has 4 divisors (see below), whose sum is σ = 87487788. Its totient is φ = 58325184.

The previous prime is 72906479. The next prime is 72906497. The reversal of 72906485 is 58460927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58460927 = 7 ⋅8351561.

It can be written as a sum of positive squares in 2 ways, for example, as 42941809 + 29964676 = 6553^2 + 5474^2 .

It is a cyclic number.

It is not a de Polignac number, because 72906485 - 2⁴ = 72906469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7290644 + ... + 7290653.

It is an arithmetic number, because the mean of its divisors is an integer number (21871947).

Almost surely, 2^72906485 is an apocalyptic number.

It is an amenable number.

72906485 is a deficient number, since it is larger than the sum of its proper divisors (14581303).

72906485 is a wasteful number, since it uses less digits than its factorization.

72906485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14581302.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 72906485 is about 8538.5294401319. The cubic root of 72906485 is about 417.7553817787.

The spelling of 72906485 in words is "seventy-two million, nine hundred six thousand, four hundred eighty-five".