1606554020 has 24 divisors (see below), whose sum is σ = 3437421624. Its totient is φ = 630496256.

The previous prime is 1606554017. The next prime is 1606554029. The reversal of 1606554020 is 204556061.

It can be written as a sum of positive squares in 4 ways, for example, as 852172864 + 754381156 = 29192^2 + 27466^2 .

It is not an unprimeable number, because it can be changed into a prime (1606554029) 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, 756749 + ... + 758868.

It is an arithmetic number, because the mean of its divisors is an integer number (143225901).

Almost surely, 2^1606554020 is an apocalyptic number.

1606554020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606554020 is an abundant number, since it is smaller than the sum of its proper divisors (1830867604).

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

1606554020 is a wasteful number, since it uses less digits than its factorization.

1606554020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515679 (or 1515677 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1606554020 is about 40081.8415245607. The cubic root of 1606554020 is about 1171.2019255436.

The spelling of 1606554020 in words is "one billion, six hundred six million, five hundred fifty-four thousand, twenty".