97766666 has 16 divisors (see below), whose sum is σ = 154560960. Its totient is φ = 46252800.

The previous prime is 97766663. The next prime is 97766671. The reversal of 97766666 is 66666779.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (97766663) 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, 60035 + ... + 61641.

It is an arithmetic number, because the mean of its divisors is an integer number (9660060).

Almost surely, 2^97766666 is an apocalyptic number.

97766666 is a deficient number, since it is larger than the sum of its proper divisors (56794294).

97766666 is a wasteful number, since it uses less digits than its factorization.

97766666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229.

The product of its digits is 3429216, while the sum is 53.

The square root of 97766666 is about 9887.7027665682. The cubic root of 97766666 is about 460.6774297289.

The spelling of 97766666 in words is "ninety-seven million, seven hundred sixty-six thousand, six hundred sixty-six".