97521668 has 12 divisors (see below), whose sum is σ = 171473232. Its totient is φ = 48529320.

The previous prime is 97521667. The next prime is 97521701. The reversal of 97521668 is 86612579.

It is not an unprimeable number, because it can be changed into a prime (97521667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56930 + ... + 58617.

It is an arithmetic number, because the mean of its divisors is an integer number (14289436).

Almost surely, 2^97521668 is an apocalyptic number.

It is an amenable number.

97521668 is a deficient number, since it is larger than the sum of its proper divisors (73951564).

97521668 is a wasteful number, since it uses less digits than its factorization.

97521668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115762 (or 115760 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 97521668 is about 9875.3059699434. The cubic root of 97521668 is about 460.2922968987.

It can be divided in two parts, 97521 and 668, that added together give a palindrome (98189).

The spelling of 97521668 in words is "ninety-seven million, five hundred twenty-one thousand, six hundred sixty-eight".