997002872 has 8 divisors (see below), whose sum is σ = 1869380400. Its totient is φ = 498501432.

The previous prime is 997002871. The next prime is 997002901. The reversal of 997002872 is 278200799.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997002871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62312672 + ... + 62312687.

It is an arithmetic number, because the mean of its divisors is an integer number (233672550).

Almost surely, 2^997002872 is an apocalyptic number.

It is an amenable number.

997002872 is a deficient number, since it is larger than the sum of its proper divisors (872377528).

997002872 is a wasteful number, since it uses less digits than its factorization.

997002872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124625365 (or 124625361 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 997002872 is about 31575.3522862374. The cubic root of 997002872 is about 998.9999575819. Note that the first 4 decimals are identical.

The spelling of 997002872 in words is "nine hundred ninety-seven million, two thousand, eight hundred seventy-two".