213901066 has 8 divisors (see below), whose sum is σ = 321011460. Its totient is φ = 106897248.

The previous prime is 213901007. The next prime is 213901073. The reversal of 213901066 is 660109312.

It can be written as a sum of positive squares in 2 ways, for example, as 153388225 + 60512841 = 12385^2 + 7779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21421 + ... + 29776.

Almost surely, 2^213901066 is an apocalyptic number.

213901066 is a deficient number, since it is larger than the sum of its proper divisors (107110394).

213901066 is a wasteful number, since it uses less digits than its factorization.

213901066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53288.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 213901066 is about 14625.3569529089. The cubic root of 213901066 is about 598.0502133426.

The spelling of 213901066 in words is "two hundred thirteen million, nine hundred one thousand, sixty-six".