266949644 has 24 divisors (see below), whose sum is σ = 503598480. Its totient is φ = 123084864.

The previous prime is 266949643. The next prime is 266949653. The reversal of 266949644 is 446949662.

266949644 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266949644² = 142524224863453472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266949592 and 266949601.

It is not an unprimeable number, because it can be changed into a prime (266949643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69527 + ... + 73265.

It is an arithmetic number, because the mean of its divisors is an integer number (20983270).

Almost surely, 2^266949644 is an apocalyptic number.

It is an amenable number.

266949644 is a deficient number, since it is larger than the sum of its proper divisors (236648836).

266949644 is a wasteful number, since it uses less digits than its factorization.

266949644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5127 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 50.

The square root of 266949644 is about 16338.5936971332. The cubic root of 266949644 is about 643.8871855933.

The spelling of 266949644 in words is "two hundred sixty-six million, nine hundred forty-nine thousand, six hundred forty-four".