213665001 has 8 divisors (see below), whose sum is σ = 310785504. Its totient is φ = 129493920.

The previous prime is 213664967. The next prime is 213665017. The reversal of 213665001 is 100566312.

213665001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213665001 - 2²¹ = 211567849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213665041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3237316 + ... + 3237381.

It is an arithmetic number, because the mean of its divisors is an integer number (38848188).

Almost surely, 2^213665001 is an apocalyptic number.

It is an amenable number.

213665001 is a deficient number, since it is larger than the sum of its proper divisors (97120503).

213665001 is a wasteful number, since it uses less digits than its factorization.

213665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6474711.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 213665001 is about 14617.2843237039. The cubic root of 213665001 is about 597.8301260940.

The spelling of 213665001 in words is "two hundred thirteen million, six hundred sixty-five thousand, one".