997612 has 48 divisors (see below), whose sum is σ = 2257920. Its totient is φ = 374400.

The previous prime is 997609. The next prime is 997627. The reversal of 997612 is 216799.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12589 + ... + 12667.

It is an arithmetic number, because the mean of its divisors is an integer number (47040).

2⁹⁹⁷⁶¹² is an apocalyptic number.

997612 is the 632-nd heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128960).

997612 is an abundant number, since it is smaller than the sum of its proper divisors (1260308).

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

997612 is a wasteful number, since it uses less digits than its factorization.

997612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 140 counting only the distinct ones).

The product of its digits is 6804, while the sum is 34.

The square root of 997612 is about 998.8052863296. The cubic root of 997612 is about 99.9203365542.

Subtracting from 997612 its sum of digits (34), we obtain a triangular number (997578 = T₁₄₁₂).

The spelling of 997612 in words is "nine hundred ninety-seven thousand, six hundred twelve".