266222061 has 24 divisors (see below), whose sum is σ = 450201024. Its totient is φ = 148415040.

The previous prime is 266222041. The next prime is 266222081. The reversal of 266222061 is 160222662.

It is an interprime number because it is at equal distance from previous prime (266222041) and next prime (266222081).

It is not a de Polignac number, because 266222061 - 2⁶ = 266221997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266222041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48951 + ... + 54116.

It is an arithmetic number, because the mean of its divisors is an integer number (18758376).

Almost surely, 2^266222061 is an apocalyptic number.

266222061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

266222061 is a deficient number, since it is larger than the sum of its proper divisors (183978963).

266222061 is a wasteful number, since it uses less digits than its factorization.

266222061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103121 (or 103118 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 266222061 is about 16316.3127268387. The cubic root of 266222061 is about 643.3016723720.

The spelling of 266222061 in words is "two hundred sixty-six million, two hundred twenty-two thousand, sixty-one".