662793378 has 64 divisors (see below), whose sum is σ = 1524096000. Its totient is φ = 190451520.

The previous prime is 662793367. The next prime is 662793379. The reversal of 662793378 is 873397266.

It is a self number, because there is not a number n which added to its sum of digits gives 662793378.

It is not an unprimeable number, because it can be changed into a prime (662793379) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 102073 + ... + 108371.

It is an arithmetic number, because the mean of its divisors is an integer number (23814000).

Almost surely, 2^662793378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662793378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762048000).

662793378 is an abundant number, since it is smaller than the sum of its proper divisors (861302622).

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

662793378 is a wasteful number, since it uses less digits than its factorization.

662793378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6407.

The product of its digits is 2286144, while the sum is 51.

The square root of 662793378 is about 25744.7737997443. The cubic root of 662793378 is about 871.8853630196.

The spelling of 662793378 in words is "six hundred sixty-two million, seven hundred ninety-three thousand, three hundred seventy-eight".