97771568 has 20 divisors (see below), whose sum is σ = 199403160. Its totient is φ = 46312704.

The previous prime is 97771543. The next prime is 97771579. The reversal of 97771568 is 86517779.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160505 + ... + 161112.

It is an arithmetic number, because the mean of its divisors is an integer number (9970158).

Almost surely, 2^97771568 is an apocalyptic number.

It is an amenable number.

97771568 is an abundant number, since it is smaller than the sum of its proper divisors (101631592).

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

97771568 is a wasteful number, since it uses less digits than its factorization.

97771568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321644 (or 321638 counting only the distinct ones).

The product of its digits is 740880, while the sum is 50.

The square root of 97771568 is about 9887.9506471260. The cubic root of 97771568 is about 460.6851290232.

The spelling of 97771568 in words is "ninety-seven million, seven hundred seventy-one thousand, five hundred sixty-eight".