268530661 has 4 divisors (see below), whose sum is σ = 306892192. Its totient is φ = 230169132.

The previous prime is 268530659. The next prime is 268530673. The reversal of 268530661 is 166035862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268530661 - 2¹ = 268530659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268530661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268530611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19180755 + ... + 19180768.

It is an arithmetic number, because the mean of its divisors is an integer number (76723048).

Almost surely, 2^268530661 is an apocalyptic number.

It is an amenable number.

268530661 is a deficient number, since it is larger than the sum of its proper divisors (38361531).

268530661 is an equidigital number, since it uses as much as digits as its factorization.

268530661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38361530.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 268530661 is about 16386.9051684569. The cubic root of 268530661 is about 645.1558311864.

The spelling of 268530661 in words is "two hundred sixty-eight million, five hundred thirty thousand, six hundred sixty-one".