266720967 has 6 divisors (see below), whose sum is σ = 385263632. Its totient is φ = 177813972.

The previous prime is 266720957. The next prime is 266720969. The reversal of 266720967 is 769027662.

It is not a de Polignac number, because 266720967 - 2¹¹ = 266718919 is a prime.

It is a super-2 number, since 2×266720967² = 142280148474830178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266720969) 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 5 ways as a sum of consecutive naturals, for example, 14817823 + ... + 14817840.

Almost surely, 2^266720967 is an apocalyptic number.

266720967 is a deficient number, since it is larger than the sum of its proper divisors (118542665).

266720967 is a wasteful number, since it uses less digits than its factorization.

266720967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29635669 (or 29635666 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 266720967 is about 16331.5941352949. The cubic root of 266720967 is about 643.7032754349.

The spelling of 266720967 in words is "two hundred sixty-six million, seven hundred twenty thousand, nine hundred sixty-seven".