266430643 has 8 divisors (see below), whose sum is σ = 278258688. Its totient is φ = 254622984.

The previous prime is 266430617. The next prime is 266430649. The reversal of 266430643 is 346034662.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266430643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266430599 and 266430608.

It is not an unprimeable number, because it can be changed into a prime (266430649) 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, 25630 + ... + 34492.

It is an arithmetic number, because the mean of its divisors is an integer number (34782336).

Almost surely, 2^266430643 is an apocalyptic number.

266430643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

266430643 is a deficient number, since it is larger than the sum of its proper divisors (11828045).

266430643 is a wasteful number, since it uses less digits than its factorization.

266430643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 266430643 is about 16322.7032993925. The cubic root of 266430643 is about 643.4696350632.

The spelling of 266430643 in words is "two hundred sixty-six million, four hundred thirty thousand, six hundred forty-three".