682768440 has 80 divisors (see below), whose sum is σ = 2294871480. Its totient is φ = 182070720.

The previous prime is 682768423. The next prime is 682768441. The reversal of 682768440 is 44867286.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682768441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 102126 + ... + 108605.

Almost surely, 2^682768440 is an apocalyptic number.

682768440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

682768440 is an abundant number, since it is smaller than the sum of its proper divisors (1612103040).

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

682768440 is a wasteful number, since it uses less digits than its factorization.

682768440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210754 (or 210741 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 682768440 is about 26129.8381166053. The cubic root of 682768440 is about 880.5576871329.

The spelling of 682768440 in words is "six hundred eighty-two million, seven hundred sixty-eight thousand, four hundred forty".