997471600 has 120 divisors (see below), whose sum is σ = 2592209088. Its totient is φ = 367411200.

The previous prime is 997471577. The next prime is 997471603. The reversal of 997471600 is 6174799.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997471603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318040 + ... + 321160.

Almost surely, 2^997471600 is an apocalyptic number.

997471600 is the 19975-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997471600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296104544).

997471600 is an abundant number, since it is smaller than the sum of its proper divisors (1594737488).

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

997471600 is a wasteful number, since it uses less digits than its factorization.

997471600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203 (or 3192 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 997471600 is about 31582.7737857206. The cubic root of 997471600 is about 999.1564886887.

The spelling of 997471600 in words is "nine hundred ninety-seven million, four hundred seventy-one thousand, six hundred".