682021740 has 96 divisors (see below), whose sum is σ = 1989356544. Its totient is φ = 174424320.

The previous prime is 682021729. The next prime is 682021789. The reversal of 682021740 is 47120286.

682021740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 682021698 and 682021707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155457 + ... + 159783.

It is an arithmetic number, because the mean of its divisors is an integer number (20722464).

Almost surely, 2^682021740 is an apocalyptic number.

682021740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 682021740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994678272).

682021740 is an abundant number, since it is smaller than the sum of its proper divisors (1307334804).

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

682021740 is a wasteful number, since it uses less digits than its factorization.

682021740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 682021740 is about 26115.5459448965. The cubic root of 682021740 is about 880.2365669086.

The spelling of 682021740 in words is "six hundred eighty-two million, twenty-one thousand, seven hundred forty".