212065620 has 48 divisors (see below), whose sum is σ = 639461760. Its totient is φ = 52200576.

The previous prime is 212065619. The next prime is 212065627. The reversal of 212065620 is 26560212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212065627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135160 + ... + 136719.

It is an arithmetic number, because the mean of its divisors is an integer number (13322120).

Almost surely, 2^212065620 is an apocalyptic number.

212065620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212065620 is an abundant number, since it is smaller than the sum of its proper divisors (427396140).

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

212065620 is a wasteful number, since it uses less digits than its factorization.

212065620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271904 (or 271902 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 212065620 is about 14562.4730042668. The cubic root of 212065620 is about 596.3347105712.

The spelling of 212065620 in words is "two hundred twelve million, sixty-five thousand, six hundred twenty".