266734065 has 32 divisors (see below), whose sum is σ = 483799680. Its totient is φ = 124402176.

The previous prime is 266734057. The next prime is 266734067. The reversal of 266734065 is 560437662.

It is not a de Polignac number, because 266734065 - 2³ = 266734057 is a prime.

It is a super-2 number, since 2×266734065² = 142294122862848450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (266734067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32292 + ... + 39701.

It is an arithmetic number, because the mean of its divisors is an integer number (15118740).

Almost surely, 2^266734065 is an apocalyptic number.

It is an amenable number.

266734065 is a deficient number, since it is larger than the sum of its proper divisors (217065615).

266734065 is a wasteful number, since it uses less digits than its factorization.

266734065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72033.

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 266734065 is about 16331.9951322550. The cubic root of 266734065 is about 643.7138121487.

The spelling of 266734065 in words is "two hundred sixty-six million, seven hundred thirty-four thousand, sixty-five".