97766620 has 48 divisors (see below), whose sum is σ = 235243008. Its totient is φ = 33433920.

The previous prime is 97766593. The next prime is 97766621. The reversal of 97766620 is 2666779.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97766621) 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, 79329 + ... + 80551.

It is an arithmetic number, because the mean of its divisors is an integer number (4900896).

Almost surely, 2^97766620 is an apocalyptic number.

It is an amenable number.

97766620 is an abundant number, since it is smaller than the sum of its proper divisors (137476388).

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

97766620 is a wasteful number, since it uses less digits than its factorization.

97766620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810 (or 1808 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 97766620 is about 9887.7004404462. The cubic root of 97766620 is about 460.6773574781.

The spelling of 97766620 in words is "ninety-seven million, seven hundred sixty-six thousand, six hundred twenty".