997537080 has 64 divisors (see below), whose sum is σ = 3007873440. Its totient is φ = 264653312.

The previous prime is 997537061. The next prime is 997537081. The reversal of 997537080 is 80735799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997537081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542 + ... + 44738.

Almost surely, 2^997537080 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 997537080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503936720).

997537080 is an abundant number, since it is smaller than the sum of its proper divisors (2010336360).

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

997537080 is a wasteful number, since it uses less digits than its factorization.

997537080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42408 (or 42404 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 997537080 is about 31583.8104097653. The cubic root of 997537080 is about 999.1783517457.

The spelling of 997537080 in words is "nine hundred ninety-seven million, five hundred thirty-seven thousand, eighty".