997541602 has 8 divisors (see below), whose sum is σ = 1561369536. Its totient is φ = 477085092.

The previous prime is 997541557. The next prime is 997541609. The reversal of 997541602 is 206145799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (997541609) 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 3 ways as a sum of consecutive naturals, for example, 10842798 + ... + 10842889.

It is an arithmetic number, because the mean of its divisors is an integer number (195171192).

Almost surely, 2^997541602 is an apocalyptic number.

997541602 is a deficient number, since it is larger than the sum of its proper divisors (563827934).

997541602 is a wasteful number, since it uses less digits than its factorization.

997541602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21685712.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 997541602 is about 31583.8819969933. The cubic root of 997541602 is about 999.1798615568.

The spelling of 997541602 in words is "nine hundred ninety-seven million, five hundred forty-one thousand, six hundred two".