662776772 has 48 divisors (see below), whose sum is σ = 1397975040. Its totient is φ = 268585632.

The previous prime is 662776757. The next prime is 662776781. The reversal of 662776772 is 277677266.

It is a self number, because there is not a number n which added to its sum of digits gives 662776772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417893 + ... + 419475.

It is an arithmetic number, because the mean of its divisors is an integer number (29124480).

Almost surely, 2^662776772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662776772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698987520).

662776772 is an abundant number, since it is smaller than the sum of its proper divisors (735198268).

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

662776772 is a wasteful number, since it uses less digits than its factorization.

662776772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400 (or 2398 counting only the distinct ones).

The product of its digits is 2074464, while the sum is 50.

The square root of 662776772 is about 25744.4512856654. The cubic root of 662776772 is about 871.8780813892.

The spelling of 662776772 in words is "six hundred sixty-two million, seven hundred seventy-six thousand, seven hundred seventy-two".