997413663 has 4 divisors (see below), whose sum is σ = 1329884888. Its totient is φ = 664942440.

The previous prime is 997413643. The next prime is 997413667. The reversal of 997413663 is 366314799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366314799 = 3 ⋅122104933.

It is not a de Polignac number, because 997413663 - 2¹⁰ = 997412639 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 (997413667) 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 3 ways as a sum of consecutive naturals, for example, 166235608 + ... + 166235613.

It is an arithmetic number, because the mean of its divisors is an integer number (332471222).

Almost surely, 2^997413663 is an apocalyptic number.

997413663 is a deficient number, since it is larger than the sum of its proper divisors (332471225).

997413663 is a wasteful number, since it uses less digits than its factorization.

997413663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332471224.

The product of its digits is 734832, while the sum is 48.

The square root of 997413663 is about 31581.8565477079. The cubic root of 997413663 is about 999.1371433592.

The spelling of 997413663 in words is "nine hundred ninety-seven million, four hundred thirteen thousand, six hundred sixty-three".