997002870 has 16 divisors (see below), whose sum is σ = 2392806960. Its totient is φ = 265867424.

The previous prime is 997002857. The next prime is 997002871. The reversal of 997002870 is 78200799.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16616685 + ... + 16616744.

It is an arithmetic number, because the mean of its divisors is an integer number (149550435).

Almost surely, 2^997002870 is an apocalyptic number.

997002870 is an abundant number, since it is smaller than the sum of its proper divisors (1395804090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997002870 is a wasteful number, since it uses less digits than its factorization.

997002870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33233439.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 997002870 is about 31575.3522545672. The cubic root of 997002870 is about 998.9999569139. Note that the first 4 decimals are identical.

The spelling of 997002870 in words is "nine hundred ninety-seven million, two thousand, eight hundred seventy".