997285727 has 8 divisors (see below), whose sum is σ = 1076531040. Its totient is φ = 921030880.

The previous prime is 997285721. The next prime is 997285741. The reversal of 997285727 is 727582799.

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 997285727 - 2²⁸ = 728850271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997285721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746924 + ... + 748257.

It is an arithmetic number, because the mean of its divisors is an integer number (134566380).

Almost surely, 2^997285727 is an apocalyptic number.

997285727 is a deficient number, since it is larger than the sum of its proper divisors (79245313).

997285727 is a wasteful number, since it uses less digits than its factorization.

997285727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495233.

The product of its digits is 4445280, while the sum is 56.

The square root of 997285727 is about 31579.8310160140. The cubic root of 997285727 is about 999.0944225103.

The spelling of 997285727 in words is "nine hundred ninety-seven million, two hundred eighty-five thousand, seven hundred twenty-seven".