997834945 has 8 divisors (see below), whose sum is σ = 1199114280. Its totient is φ = 797126400.

The previous prime is 997834933. The next prime is 997834973. The reversal of 997834945 is 549438799.

997834945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 200845584 + 796989361 = 14172^2 + 28231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997834945 - 2²¹ = 995737793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997834945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138840 + ... + 145849.

It is an arithmetic number, because the mean of its divisors is an integer number (149889285).

Almost surely, 2^997834945 is an apocalyptic number.

It is an amenable number.

997834945 is a deficient number, since it is larger than the sum of its proper divisors (201279335).

997834945 is a wasteful number, since it uses less digits than its factorization.

997834945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285395.

The product of its digits is 9797760, while the sum is 58.

The square root of 997834945 is about 31588.5255274760. The cubic root of 997834945 is about 999.2777935434.

The spelling of 997834945 in words is "nine hundred ninety-seven million, eight hundred thirty-four thousand, nine hundred forty-five".