97771880 has 32 divisors (see below), whose sum is σ = 225356040. Its totient is φ = 38154240.

The previous prime is 97771867. The next prime is 97771889. The reversal of 97771880 is 8817779.

It can be written as a sum of positive squares in 4 ways, for example, as 83649316 + 14122564 = 9146^2 + 3758^2 .

It is not an unprimeable number, because it can be changed into a prime (97771889) 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, 28169 + ... + 31448.

Almost surely, 2^97771880 is an apocalyptic number.

It is an amenable number.

97771880 is an abundant number, since it is smaller than the sum of its proper divisors (127584160).

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

97771880 is a wasteful number, since it uses less digits than its factorization.

97771880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59669 (or 59665 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 47.

The square root of 97771880 is about 9887.9664238912. The cubic root of 97771880 is about 460.6856190553.

The spelling of 97771880 in words is "ninety-seven million, seven hundred seventy-one thousand, eight hundred eighty".