213648783 has 4 divisors (see below), whose sum is σ = 284865048. Its totient is φ = 142432520.

The previous prime is 213648769. The next prime is 213648797. The reversal of 213648783 is 387846312.

213648783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213648769) and next prime (213648797).

It is a cyclic number.

It is not a de Polignac number, because 213648783 - 2⁹ = 213648271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213648703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35608128 + ... + 35608133.

It is an arithmetic number, because the mean of its divisors is an integer number (71216262).

Almost surely, 2^213648783 is an apocalyptic number.

213648783 is a deficient number, since it is larger than the sum of its proper divisors (71216265).

213648783 is an equidigital number, since it uses as much as digits as its factorization.

213648783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71216264.

The product of its digits is 193536, while the sum is 42.

The square root of 213648783 is about 14616.7295589677. The cubic root of 213648783 is about 597.8149998383.

The spelling of 213648783 in words is "two hundred thirteen million, six hundred forty-eight thousand, seven hundred eighty-three".