994657566 has 48 divisors (see below), whose sum is σ = 2319186816. Its totient is φ = 283563504.

The previous prime is 994657549. The next prime is 994657721. The reversal of 994657566 is 665756499.

994657566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139705 + ... + 146651.

It is an arithmetic number, because the mean of its divisors is an integer number (48316392).

Almost surely, 2^994657566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 994657566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159593408).

994657566 is an abundant number, since it is smaller than the sum of its proper divisors (1324529250).

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

994657566 is a wasteful number, since it uses less digits than its factorization.

994657566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453 (or 7446 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 57.

The square root of 994657566 is about 31538.1921802756. The cubic root of 994657566 is about 998.2160079316.

The spelling of 994657566 in words is "nine hundred ninety-four million, six hundred fifty-seven thousand, five hundred sixty-six".