16540660 has 24 divisors (see below), whose sum is σ = 36779400. Its totient is φ = 6226944.

The previous prime is 16540633. The next prime is 16540661. The reversal of 16540660 is 6604561.

It can be written as a sum of positive squares in 4 ways, for example, as 2835856 + 13704804 = 1684^2 + 3702^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16540661) 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, 23985 + ... + 24664.

It is an arithmetic number, because the mean of its divisors is an integer number (1532475).

Almost surely, 2^16540660 is an apocalyptic number.

16540660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16540660 is an abundant number, since it is smaller than the sum of its proper divisors (20238740).

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

16540660 is a wasteful number, since it uses less digits than its factorization.

16540660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48675 (or 48673 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 16540660 is about 4067.0210228126. The cubic root of 16540660 is about 254.7911143391.

The spelling of 16540660 in words is "sixteen million, five hundred forty thousand, six hundred sixty".