365666213 has 16 divisors (see below), whose sum is σ = 418853376. Its totient is φ = 315984240.

The previous prime is 365666179. The next prime is 365666219. The reversal of 365666213 is 312666563.

It is a happy number.

It is not a de Polignac number, because 365666213 - 2⁶ = 365666149 is a prime.

It is a super-2 number, since 2×365666213² = 267423558659522738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365666219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36806 + ... + 45672.

It is an arithmetic number, because the mean of its divisors is an integer number (26178336).

Almost surely, 2^365666213 is an apocalyptic number.

It is an amenable number.

365666213 is a deficient number, since it is larger than the sum of its proper divisors (53187163).

365666213 is a wasteful number, since it uses less digits than its factorization.

365666213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064.

The product of its digits is 116640, while the sum is 38.

The square root of 365666213 is about 19122.4008168431. The cubic root of 365666213 is about 715.0914926850.

The spelling of 365666213 in words is "three hundred sixty-five million, six hundred sixty-six thousand, two hundred thirteen".