213674985 has 48 divisors (see below), whose sum is σ = 382112640. Its totient is φ = 110388480.

The previous prime is 213674957. The next prime is 213675001. The reversal of 213674985 is 589476312.

It is not a de Polignac number, because 213674985 - 2⁸ = 213674729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 213674985.

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 47 ways as a sum of consecutive naturals, for example, 329932 + ... + 330578.

It is an arithmetic number, because the mean of its divisors is an integer number (7960680).

Almost surely, 2^213674985 is an apocalyptic number.

It is an amenable number.

213674985 is a deficient number, since it is larger than the sum of its proper divisors (168437655).

213674985 is a wasteful number, since it uses less digits than its factorization.

213674985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 875 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 213674985 is about 14617.6258332193. The cubic root of 213674985 is about 597.8394376222.

The spelling of 213674985 in words is "two hundred thirteen million, six hundred seventy-four thousand, nine hundred eighty-five".