682016640 has 128 divisors (see below), whose sum is σ = 2196076320. Its totient is φ = 180019200.

The previous prime is 682016639. The next prime is 682016641. The reversal of 682016640 is 46610286.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (682016639) and next prime (682016641).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682016641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192162 + ... + 195678.

Almost surely, 2^682016640 is an apocalyptic number.

682016640 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 682016640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098038160).

682016640 is an abundant number, since it is smaller than the sum of its proper divisors (1514059680).

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

682016640 is a wasteful number, since it uses less digits than its factorization.

682016640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3628 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 682016640 is about 26115.4483017236. The cubic root of 682016640 is about 880.2343728350.

The spelling of 682016640 in words is "six hundred eighty-two million, sixteen thousand, six hundred forty".