720549885 has 16 divisors (see below), whose sum is σ = 1257687360. Its totient is φ = 349357440.

The previous prime is 720549883. The next prime is 720549887. The reversal of 720549885 is 588945027.

It is an interprime number because it is at equal distance from previous prime (720549883) and next prime (720549887).

It is not a de Polignac number, because 720549885 - 2¹ = 720549883 is a prime.

It is a super-3 number, since 3×720549885³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720549881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2183320 + ... + 2183649.

It is an arithmetic number, because the mean of its divisors is an integer number (78605460).

Almost surely, 2^720549885 is an apocalyptic number.

It is an amenable number.

720549885 is a deficient number, since it is larger than the sum of its proper divisors (537137475).

720549885 is a wasteful number, since it uses less digits than its factorization.

720549885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366988.

The product of its (nonzero) digits is 806400, while the sum is 48.

The square root of 720549885 is about 26843.0602763545. The cubic root of 720549885 is about 896.5090632164.

The spelling of 720549885 in words is "seven hundred twenty million, five hundred forty-nine thousand, eight hundred eighty-five".