213755956 has 24 divisors (see below), whose sum is σ = 390497576. Its totient is φ = 102280320.

The previous prime is 213755939. The next prime is 213755957. The reversal of 213755956 is 659557312.

213755956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14945956 + 198810000 = 3866^2 + 14100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213755957) 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, 2811 + ... + 20866.

Almost surely, 2^213755956 is an apocalyptic number.

It is an amenable number.

213755956 is a deficient number, since it is larger than the sum of its proper divisors (176741620).

213755956 is a wasteful number, since it uses less digits than its factorization.

213755956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23779 (or 23777 counting only the distinct ones).

The product of its digits is 283500, while the sum is 43.

The square root of 213755956 is about 14620.3952066967. The cubic root of 213755956 is about 597.9149441113.

The spelling of 213755956 in words is "two hundred thirteen million, seven hundred fifty-five thousand, nine hundred fifty-six".