266348990 has 16 divisors (see below), whose sum is σ = 479643120. Its totient is φ = 106491840.

The previous prime is 266348989. The next prime is 266349007. The reversal of 266348990 is 99843662.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25205 + ... + 34175.

It is an arithmetic number, because the mean of its divisors is an integer number (29977695).

Almost surely, 2^266348990 is an apocalyptic number.

266348990 is a deficient number, since it is larger than the sum of its proper divisors (213294130).

266348990 is a wasteful number, since it uses less digits than its factorization.

266348990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11947.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 266348990 is about 16320.2018982609. The cubic root of 266348990 is about 643.4038936332.

The spelling of 266348990 in words is "two hundred sixty-six million, three hundred forty-eight thousand, nine hundred ninety".