214540660 has 24 divisors (see below), whose sum is σ = 457923816. Its totient is φ = 84408960.

The previous prime is 214540621. The next prime is 214540687. The reversal of 214540660 is 66045412.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 214505316 = 188^2 + 14646^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86707 + ... + 89146.

It is an arithmetic number, because the mean of its divisors is an integer number (19080159).

Almost surely, 2^214540660 is an apocalyptic number.

214540660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214540660 is an abundant number, since it is smaller than the sum of its proper divisors (243383156).

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

214540660 is a wasteful number, since it uses less digits than its factorization.

214540660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175923 (or 175921 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 214540660 is about 14647.2065596140. The cubic root of 214540660 is about 598.6457046996.

The spelling of 214540660 in words is "two hundred fourteen million, five hundred forty thousand, six hundred sixty".