997004881 has 8 divisors (see below), whose sum is σ = 1013058144. Its totient is φ = 981048000.

The previous prime is 997004867. The next prime is 997004893. The reversal of 997004881 is 188400799.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 997004881 - 2¹¹ = 997002833 is a prime.

It is a super-2 number, since 2×997004881² = 1988037465475648322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997004861) 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, 3096 + ... + 44761.

It is an arithmetic number, because the mean of its divisors is an integer number (126632268).

Almost surely, 2^997004881 is an apocalyptic number.

It is an amenable number.

997004881 is a deficient number, since it is larger than the sum of its proper divisors (16053263).

997004881 is a wasteful number, since it uses less digits than its factorization.

997004881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48191.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 997004881 is about 31575.3840990098. The cubic root of 997004881 is about 999.0006285895. Note that the first 3 decimals are identical.

The spelling of 997004881 in words is "nine hundred ninety-seven million, four thousand, eight hundred eighty-one".