213366474 has 40 divisors (see below), whose sum is σ = 479303748. Its totient is φ = 70943040.

The previous prime is 213366451. The next prime is 213366509. The reversal of 213366474 is 474663312.

It is a happy number.

213366474 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 6 + 647 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 213364449 + 2025 = 14607^2 + 45^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73254 + ... + 76110.

Almost surely, 2^213366474 is an apocalyptic number.

213366474 is an abundant number, since it is smaller than the sum of its proper divisors (265937274).

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

213366474 is a wasteful number, since it uses less digits than its factorization.

213366474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332 (or 3323 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 213366474 is about 14607.0693159169. The cubic root of 213366474 is about 597.5515722599.

The spelling of 213366474 in words is "two hundred thirteen million, three hundred sixty-six thousand, four hundred seventy-four".