997451336 has 64 divisors (see below), whose sum is σ = 2268362880. Its totient is φ = 401402880.

The previous prime is 997451309. The next prime is 997451359. The reversal of 997451336 is 633154799.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 535046 + ... + 536906.

It is an arithmetic number, because the mean of its divisors is an integer number (35443170).

Almost surely, 2^997451336 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 997451336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134181440).

997451336 is an abundant number, since it is smaller than the sum of its proper divisors (1270911544).

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

997451336 is a wasteful number, since it uses less digits than its factorization.

997451336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454 (or 2450 counting only the distinct ones).

The product of its digits is 612360, while the sum is 47.

The square root of 997451336 is about 31582.4529762968. The cubic root of 997451336 is about 999.1497225665.

The spelling of 997451336 in words is "nine hundred ninety-seven million, four hundred fifty-one thousand, three hundred thirty-six".