1017661266 has 32 divisors (see below), whose sum is σ = 2359797120. Its totient is φ = 324471312.

The previous prime is 1017661237. The next prime is 1017661277. The reversal of 1017661266 is 6621667101.

It is a self number, because there is not a number n which added to its sum of digits gives 1017661266.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408445 + ... + 410928.

It is an arithmetic number, because the mean of its divisors is an integer number (73743660).

Almost surely, 2^1017661266 is an apocalyptic number.

1017661266 is an abundant number, since it is smaller than the sum of its proper divisors (1342135854).

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

1017661266 is a wasteful number, since it uses less digits than its factorization.

1017661266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819407 (or 819401 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1017661266 is about 31900.8035321996. The cubic root of 1017661266 is about 1005.8527669570.

The spelling of 1017661266 in words is "one billion, seventeen million, six hundred sixty-one thousand, two hundred sixty-six".