549720785 has 16 divisors (see below), whose sum is σ = 670575360. Its totient is φ = 432561600.

The previous prime is 549720767. The next prime is 549720791. The reversal of 549720785 is 587027945.

It is a happy number.

It is not a de Polignac number, because 549720785 - 2¹⁸ = 549458641 is a prime.

It is a super-2 number, since 2×549720785² = 604385882922032450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74231 + ... + 81299.

It is an arithmetic number, because the mean of its divisors is an integer number (41910960).

Almost surely, 2^549720785 is an apocalyptic number.

It is an amenable number.

549720785 is a deficient number, since it is larger than the sum of its proper divisors (120854575).

549720785 is a wasteful number, since it uses less digits than its factorization.

549720785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7328.

The product of its (nonzero) digits is 705600, while the sum is 47.

The square root of 549720785 is about 23446.1251596079. The cubic root of 549720785 is about 819.1826005936.

The spelling of 549720785 in words is "five hundred forty-nine million, seven hundred twenty thousand, seven hundred eighty-five".