97699840 has 192 divisors, whose sum is σ = 283046400. Its totient is φ = 31653888.

The previous prime is 97699831. The next prime is 97699841. The reversal of 97699840 is 4899679.

It is not an unprimeable number, because it can be changed into a prime (97699841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2078697 + ... + 2078743.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^97699840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97699840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141523200).

97699840 is an abundant number, since it is smaller than the sum of its proper divisors (185346560).

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

97699840 is a wasteful number, since it uses less digits than its factorization.

97699840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 97699840 is about 9884.3229408999. The cubic root of 97699840 is about 460.5724442295.

The spelling of 97699840 in words is "ninety-seven million, six hundred ninety-nine thousand, eight hundred forty".