266372001 has 24 divisors (see below), whose sum is σ = 462870720. Its totient is φ = 144200736.

The previous prime is 266371999. The next prime is 266372063. The reversal of 266372001 is 100273662.

It is a happy number.

266372001 is a `hidden beast` number, since 2 + 6 + 637 + 20 + 0 + 1 = 666.

It is not a de Polignac number, because 266372001 - 2¹ = 266371999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266372501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110070 + ... + 112463.

It is an arithmetic number, because the mean of its divisors is an integer number (19286280).

Almost surely, 2^266372001 is an apocalyptic number.

266372001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

266372001 is a deficient number, since it is larger than the sum of its proper divisors (196498719).

266372001 is a wasteful number, since it uses less digits than its factorization.

266372001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222565 (or 222562 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 266372001 is about 16320.9068681860. The cubic root of 266372001 is about 643.4224218814.

The spelling of 266372001 in words is "two hundred sixty-six million, three hundred seventy-two thousand, one".