266960646 has 24 divisors (see below), whose sum is σ = 578770920. Its totient is φ = 88932096.

The previous prime is 266960627. The next prime is 266960651. The reversal of 266960646 is 646069662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34525 + ... + 41543.

It is an arithmetic number, because the mean of its divisors is an integer number (24115455).

Almost surely, 2^266960646 is an apocalyptic number.

266960646 is an abundant number, since it is smaller than the sum of its proper divisors (311810274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266960646 is a wasteful number, since it uses less digits than its factorization.

266960646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9140 (or 9137 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 266960646 is about 16338.9303811480. The cubic root of 266960646 is about 643.8960311436.

The spelling of 266960646 in words is "two hundred sixty-six million, nine hundred sixty thousand, six hundred forty-six".