97475820 has 72 divisors (see below), whose sum is σ = 295572816. Its totient is φ = 23991552.

The previous prime is 97475813. The next prime is 97475831. The reversal of 97475820 is 2857479.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5334 + ... + 14946.

It is an arithmetic number, because the mean of its divisors is an integer number (4105178).

Almost surely, 2^97475820 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 97475820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147786408).

97475820 is an abundant number, since it is smaller than the sum of its proper divisors (198096996).

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

97475820 is a wasteful number, since it uses less digits than its factorization.

97475820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9651 (or 9636 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 97475820 is about 9872.9843512486. The cubic root of 97475820 is about 460.2201529685.

The spelling of 97475820 in words is "ninety-seven million, four hundred seventy-five thousand, eight hundred twenty".