97816869 has 8 divisors (see below), whose sum is σ = 144913920. Its totient is φ = 65211228.

The previous prime is 97816847. The next prime is 97816889. The reversal of 97816869 is 96861879.

It is not a de Polignac number, because 97816869 - 2⁸ = 97816613 is a prime.

It is a super-2 number, since 2×97816869² = 19136279721926322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97816819) 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, 1811397 + ... + 1811450.

It is an arithmetic number, because the mean of its divisors is an integer number (18114240).

Almost surely, 2^97816869 is an apocalyptic number.

It is an amenable number.

97816869 is a deficient number, since it is larger than the sum of its proper divisors (47097051).

97816869 is a wasteful number, since it uses less digits than its factorization.

97816869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622856 (or 3622850 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 97816869 is about 9890.2410991846. The cubic root of 97816869 is about 460.7562685685.

The spelling of 97816869 in words is "ninety-seven million, eight hundred sixteen thousand, eight hundred sixty-nine".