97788481 has 8 divisors (see below), whose sum is σ = 111821184. Its totient is φ = 83771520.

The previous prime is 97788451. The next prime is 97788499. The reversal of 97788481 is 18488779.

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

It is not a de Polignac number, because 97788481 - 2⁹ = 97787969 is a prime.

It is a super-2 number, since 2×97788481² = 19125174032574722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97788451) 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, 16401 + ... + 21553.

It is an arithmetic number, because the mean of its divisors is an integer number (13977648).

Almost surely, 2^97788481 is an apocalyptic number.

It is an amenable number.

97788481 is a deficient number, since it is larger than the sum of its proper divisors (14032703).

97788481 is a wasteful number, since it uses less digits than its factorization.

97788481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871.

The product of its digits is 903168, while the sum is 52.

The square root of 97788481 is about 9888.8058429721. The cubic root of 97788481 is about 460.7116913409.

The spelling of 97788481 in words is "ninety-seven million, seven hundred eighty-eight thousand, four hundred eighty-one".