997000680 has 128 divisors (see below), whose sum is σ = 3390710400. Its totient is φ = 232492032.

The previous prime is 997000679. The next prime is 997000681. The reversal of 997000680 is 86000799.

It is an interprime number because it is at equal distance from previous prime (997000679) and next prime (997000681).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (997000681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12822 + ... + 46458.

It is an arithmetic number, because the mean of its divisors is an integer number (26489925).

Almost surely, 2^997000680 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 997000680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1695355200).

997000680 is an abundant number, since it is smaller than the sum of its proper divisors (2393709720).

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

997000680 is a wasteful number, since it uses less digits than its factorization.

997000680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33683 (or 33679 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 997000680 is about 31575.3175756001. The cubic root of 997000680 is about 998.9992254511. Note that the first 3 decimals are identical.

The spelling of 997000680 in words is "nine hundred ninety-seven million, six hundred eighty", and thus it is an aban number.