213620 has 24 divisors (see below), whose sum is σ = 489888. Its totient is φ = 77600.

The previous prime is 213613. The next prime is 213623. The reversal of 213620 is 26312.

213620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213595 and 213604.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 213620.

It is not an unprimeable number, because it can be changed into a prime (213623) 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, 266 + ... + 705.

It is an arithmetic number, because the mean of its divisors is an integer number (20412).

2²¹³⁶²⁰ is an apocalyptic number.

213620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213620 is an abundant number, since it is smaller than the sum of its proper divisors (276268).

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

213620 is a wasteful number, since it uses less digits than its factorization.

213620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213620 is about 462.1904369413. The cubic root of 213620 is about 59.7788152534.

Adding to 213620 its reverse (26312), we get a palindrome (239932).

The spelling of 213620 in words is "two hundred thirteen thousand, six hundred twenty".