266615622 has 96 divisors (see below), whose sum is σ = 716701440. Its totient is φ = 69750720.

The previous prime is 266615621. The next prime is 266615627. The reversal of 266615622 is 226516662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266615621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227097 + ... + 228267.

It is an arithmetic number, because the mean of its divisors is an integer number (7465640).

Almost surely, 2^266615622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266615622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358350720).

266615622 is an abundant number, since it is smaller than the sum of its proper divisors (450085818).

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

266615622 is a wasteful number, since it uses less digits than its factorization.

266615622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 1335 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 266615622 is about 16328.3686264121. The cubic root of 266615622 is about 643.6185178798.

The spelling of 266615622 in words is "two hundred sixty-six million, six hundred fifteen thousand, six hundred twenty-two".