212058660 has 48 divisors (see below), whose sum is σ = 647744832. Its totient is φ = 51408000.

The previous prime is 212058647. The next prime is 212058709. The reversal of 212058660 is 66850212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159991 + ... + 161310.

It is an arithmetic number, because the mean of its divisors is an integer number (13494684).

Almost surely, 2^212058660 is an apocalyptic number.

212058660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212058660 is an abundant number, since it is smaller than the sum of its proper divisors (435686172).

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

212058660 is a wasteful number, since it uses less digits than its factorization.

212058660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321324 (or 321322 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 212058660 is about 14562.2340319060. The cubic root of 212058660 is about 596.3281865921.

The spelling of 212058660 in words is "two hundred twelve million, fifty-eight thousand, six hundred sixty".