266825620 has 24 divisors (see below), whose sum is σ = 565778304. Its totient is φ = 105693216.

The previous prime is 266825593. The next prime is 266825633. The reversal of 266825620 is 26528662.

It is a super-2 number, since 2×266825620² = 142391822976768800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 266825620.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62704 + ... + 66823.

It is an arithmetic number, because the mean of its divisors is an integer number (23574096).

Almost surely, 2^266825620 is an apocalyptic number.

266825620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266825620 is an abundant number, since it is smaller than the sum of its proper divisors (298952684).

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

266825620 is a wasteful number, since it uses less digits than its factorization.

266825620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129639 (or 129637 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 266825620 is about 16334.7978255012. The cubic root of 266825620 is about 643.7874541315.

The spelling of 266825620 in words is "two hundred sixty-six million, eight hundred twenty-five thousand, six hundred twenty".