549386620 has 24 divisors (see below), whose sum is σ = 1221578064. Its totient is φ = 206827776.

The previous prime is 549386611. The next prime is 549386623. The reversal of 549386620 is 26683945.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549386623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807582 + ... + 808261.

It is an arithmetic number, because the mean of its divisors is an integer number (50899086).

Almost surely, 2^549386620 is an apocalyptic number.

It is an amenable number.

549386620 is an abundant number, since it is smaller than the sum of its proper divisors (672191444).

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

549386620 is a wasteful number, since it uses less digits than its factorization.

549386620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615869 (or 1615867 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 549386620 is about 23438.9978454711. The cubic root of 549386620 is about 819.0165783464.

The spelling of 549386620 in words is "five hundred forty-nine million, three hundred eighty-six thousand, six hundred twenty".