997358544 has 360 divisors, whose sum is σ = 3565834272. Its totient is φ = 257886720.

The previous prime is 997358543. The next prime is 997358599. The reversal of 997358544 is 445853799.

997358544 is a `hidden beast` number, since 9 + 97 + 3 + 5 + 8 + 544 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997358543) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7613359 + ... + 7613489.

Almost surely, 2^997358544 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 997358544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782917136).

997358544 is an abundant number, since it is smaller than the sum of its proper divisors (2568475728).

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

997358544 is a wasteful number, since it uses less digits than its factorization.

997358544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 239 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 997358544 is about 31580.9838985425. The cubic root of 997358544 is about 999.1187382726.

The spelling of 997358544 in words is "nine hundred ninety-seven million, three hundred fifty-eight thousand, five hundred forty-four".