978771366 has 12 divisors (see below), whose sum is σ = 2120671332. Its totient is φ = 326257116.

The previous prime is 978771361. The next prime is 978771383. The reversal of 978771366 is 663177879.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978771361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27188076 + ... + 27188111.

It is an arithmetic number, because the mean of its divisors is an integer number (176722611).

Almost surely, 2^978771366 is an apocalyptic number.

978771366 is an abundant number, since it is smaller than the sum of its proper divisors (1141899966).

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

978771366 is a wasteful number, since it uses less digits than its factorization.

978771366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54376195 (or 54376192 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 978771366 is about 31285.3218938211. The cubic root of 978771366 is about 992.8731168675.

The spelling of 978771366 in words is "nine hundred seventy-eight million, seven hundred seventy-one thousand, three hundred sixty-six".