266026601 has 4 divisors (see below), whose sum is σ = 266882304. Its totient is φ = 265170900.

The previous prime is 266026589. The next prime is 266026613. The reversal of 266026601 is 106620662.

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, and also an emirpimes, since its reverse is a distinct semiprime: 106620662 = 2 ⋅53310331.

It is an interprime number because it is at equal distance from previous prime (266026589) and next prime (266026613).

It is a cyclic number.

It is not a de Polignac number, because 266026601 - 2²² = 261832297 is a prime.

It is a super-2 number, since 2×266026601² = 141540304879226402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266026001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427385 + ... + 428006.

It is an arithmetic number, because the mean of its divisors is an integer number (66720576).

Almost surely, 2^266026601 is an apocalyptic number.

It is an amenable number.

266026601 is a deficient number, since it is larger than the sum of its proper divisors (855703).

266026601 is an equidigital number, since it uses as much as digits as its factorization.

266026601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855702.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 266026601 is about 16310.3219158912. The cubic root of 266026601 is about 643.1441966546.

The spelling of 266026601 in words is "two hundred sixty-six million, twenty-six thousand, six hundred one".