549643696 has 60 divisors (see below), whose sum is σ = 1272422032. Its totient is φ = 225295488.

The previous prime is 549643691. The next prime is 549643697. The reversal of 549643696 is 696346945.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549643691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54610 + ... + 63886.

Almost surely, 2^549643696 is an apocalyptic number.

549643696 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549643696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636211016).

549643696 is an abundant number, since it is smaller than the sum of its proper divisors (722778336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549643696 is a wasteful number, since it uses less digits than its factorization.

549643696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338 (or 9309 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 52.

The square root of 549643696 is about 23444.4811416248. The cubic root of 549643696 is about 819.1443066564.

The spelling of 549643696 in words is "five hundred forty-nine million, six hundred forty-three thousand, six hundred ninety-six".