97822881 has 24 divisors (see below), whose sum is σ = 154452480. Its totient is φ = 59295456.

The previous prime is 97822871. The next prime is 97822897. The reversal of 97822881 is 18822879.

It is a happy number.

It is not a de Polignac number, because 97822881 - 2¹⁴ = 97806497 is a prime.

It is a super-2 number, since 2×97822881² = 19138632094280322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97822801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1600 + ... + 14078.

It is an arithmetic number, because the mean of its divisors is an integer number (6435520).

Almost surely, 2^97822881 is an apocalyptic number.

It is an amenable number.

97822881 is a deficient number, since it is larger than the sum of its proper divisors (56629599).

97822881 is a wasteful number, since it uses less digits than its factorization.

97822881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565 (or 12562 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 97822881 is about 9890.5450304824. The cubic root of 97822881 is about 460.7657080104.

The spelling of 97822881 in words is "ninety-seven million, eight hundred twenty-two thousand, eight hundred eighty-one".