997637103 has 6 divisors (see below), whose sum is σ = 1441031384. Its totient is φ = 665091396.

The previous prime is 997637101. The next prime is 997637119. The reversal of 997637103 is 301736799.

997637103 is a `hidden beast` number, since 9 + 9 + 7 + 637 + 1 + 0 + 3 = 666.

It is not a de Polignac number, because 997637103 - 2¹ = 997637101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997637101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55424275 + ... + 55424292.

Almost surely, 2^997637103 is an apocalyptic number.

997637103 is a deficient number, since it is larger than the sum of its proper divisors (443394281).

997637103 is a wasteful number, since it uses less digits than its factorization.

997637103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110848573 (or 110848570 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 45.

The square root of 997637103 is about 31585.3938237281. The cubic root of 997637103 is about 999.2117464863.

The spelling of 997637103 in words is "nine hundred ninety-seven million, six hundred thirty-seven thousand, one hundred three".