997635453 has 4 divisors (see below), whose sum is σ = 1330180608. Its totient is φ = 665090300.

The previous prime is 997635439. The next prime is 997635461. The reversal of 997635453 is 354536799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 997635453 - 2⁵ = 997635421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997635396 and 997635405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997635553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166272573 + ... + 166272578.

It is an arithmetic number, because the mean of its divisors is an integer number (332545152).

Almost surely, 2^997635453 is an apocalyptic number.

It is an amenable number.

997635453 is a deficient number, since it is larger than the sum of its proper divisors (332545155).

997635453 is a wasteful number, since it uses less digits than its factorization.

997635453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332545154.

The product of its digits is 3061800, while the sum is 51.

The square root of 997635453 is about 31585.3677040493. The cubic root of 997635453 is about 999.2111956179.

The spelling of 997635453 in words is "nine hundred ninety-seven million, six hundred thirty-five thousand, four hundred fifty-three".