212464660 has 24 divisors (see below), whose sum is σ = 452462976. Its totient is φ = 83788320.

The previous prime is 212464649. The next prime is 212464663. The reversal of 212464660 is 66464212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212464663) by changing a digit.

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, 73392 + ... + 76231.

It is an arithmetic number, because the mean of its divisors is an integer number (18852624).

Almost surely, 2^212464660 is an apocalyptic number.

212464660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212464660 is an abundant number, since it is smaller than the sum of its proper divisors (239998316).

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

212464660 is a wasteful number, since it uses less digits than its factorization.

212464660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149703 (or 149701 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 212464660 is about 14576.1675347123. The cubic root of 212464660 is about 596.7085135838.

The spelling of 212464660 in words is "two hundred twelve million, four hundred sixty-four thousand, six hundred sixty".