252066639 has 8 divisors (see below), whose sum is σ = 366642432. Its totient is φ = 152767640.

The previous prime is 252066613. The next prime is 252066677. The reversal of 252066639 is 936660252.

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

It is a cyclic number.

It is not a de Polignac number, because 252066639 - 2⁷ = 252066511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252066597 and 252066606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252066439) 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, 3819159 + ... + 3819224.

It is an arithmetic number, because the mean of its divisors is an integer number (45830304).

Almost surely, 2^252066639 is an apocalyptic number.

252066639 is a deficient number, since it is larger than the sum of its proper divisors (114575793).

252066639 is a wasteful number, since it uses less digits than its factorization.

252066639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638397.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 252066639 is about 15876.6066588550. The cubic root of 252066639 is about 631.6916315633.

The spelling of 252066639 in words is "two hundred fifty-two million, sixty-six thousand, six hundred thirty-nine".