266308998 has 16 divisors (see below), whose sum is σ = 533202480. Its totient is φ = 88672256.

The previous prime is 266308979. The next prime is 266309027. The reversal of 266308998 is 899803662.

It is a self number, because there is not a number n which added to its sum of digits gives 266308998.

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, 18315 + ... + 29462.

It is an arithmetic number, because the mean of its divisors is an integer number (33325155).

Almost surely, 2^266308998 is an apocalyptic number.

266308998 is an abundant number, since it is smaller than the sum of its proper divisors (266893482).

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

266308998 is a wasteful number, since it uses less digits than its factorization.

266308998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48711.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 266308998 is about 16318.9766223253. The cubic root of 266308998 is about 643.3716898987.

The spelling of 266308998 in words is "two hundred sixty-six million, three hundred eight thousand, nine hundred ninety-eight".