213564498 has 16 divisors (see below), whose sum is σ = 488147520. Its totient is φ = 61018416.

The previous prime is 213564469. The next prime is 213564511. The reversal of 213564498 is 894465312.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5084869 = 213564498 / (2 + 1 + 3 + 5 + 6 + 4 + 4 + 9 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2542393 + ... + 2542476.

It is an arithmetic number, because the mean of its divisors is an integer number (30509220).

Almost surely, 2^213564498 is an apocalyptic number.

213564498 is an abundant number, since it is smaller than the sum of its proper divisors (274583022).

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

213564498 is a wasteful number, since it uses less digits than its factorization.

213564498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084881.

The product of its digits is 207360, while the sum is 42.

The square root of 213564498 is about 14613.8461056629. The cubic root of 213564498 is about 597.7363763081.

The spelling of 213564498 in words is "two hundred thirteen million, five hundred sixty-four thousand, four hundred ninety-eight".