997537085 has 8 divisors (see below), whose sum is σ = 1197231840. Its totient is φ = 797904784.

The previous prime is 997537081. The next prime is 997537103. The reversal of 997537085 is 580735799.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 997537085 - 2² = 997537081 is a prime.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33686 + ... + 55944.

It is an arithmetic number, because the mean of its divisors is an integer number (149653980).

Almost surely, 2^997537085 is an apocalyptic number.

It is an amenable number.

997537085 is a deficient number, since it is larger than the sum of its proper divisors (199694755).

997537085 is a wasteful number, since it uses less digits than its factorization.

997537085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31227.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The square root of 997537085 is about 31583.8104889198. The cubic root of 997537085 is about 999.1783534151.

The spelling of 997537085 in words is "nine hundred ninety-seven million, five hundred thirty-seven thousand, eighty-five".