213665002 has 4 divisors (see below), whose sum is σ = 320497506. Its totient is φ = 106832500.

The previous prime is 213664967. The next prime is 213665017. The reversal of 213665002 is 200566312.

213665002 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 can be written as a sum of positive squares in only one way, i.e., 181413961 + 32251041 = 13469^2 + 5679^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53416249 + ... + 53416252.

Almost surely, 2^213665002 is an apocalyptic number.

213665002 is a deficient number, since it is larger than the sum of its proper divisors (106832504).

213665002 is a wasteful number, since it uses less digits than its factorization.

213665002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106832503.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 213665002 is about 14617.2843579100. The cubic root of 213665002 is about 597.8301270267.

The spelling of 213665002 in words is "two hundred thirteen million, six hundred sixty-five thousand, two".