997111748 has 6 divisors (see below), whose sum is σ = 1744945566. Its totient is φ = 498555872.

The previous prime is 997111733. The next prime is 997111751. The reversal of 997111748 is 847111799.

It can be written as a sum of positive squares in only one way, i.e., 913973824 + 83137924 = 30232^2 + 9118^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 124638965 + ... + 124638972.

It is an arithmetic number, because the mean of its divisors is an integer number (290824261).

Almost surely, 2^997111748 is an apocalyptic number.

It is an amenable number.

997111748 is a deficient number, since it is larger than the sum of its proper divisors (747833818).

997111748 is a wasteful number, since it uses less digits than its factorization.

997111748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249277941 (or 249277939 counting only the distinct ones).

The product of its digits is 127008, while the sum is 47.

The square root of 997111748 is about 31577.0763054466. The cubic root of 997111748 is about 999.0363209543.

The spelling of 997111748 in words is "nine hundred ninety-seven million, one hundred eleven thousand, seven hundred forty-eight".