97666678 has 8 divisors (see below), whose sum is σ = 151225920. Its totient is φ = 47258040.

The previous prime is 97666601. The next prime is 97666703. The reversal of 97666678 is 87666679.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 787573 + ... + 787696.

It is an arithmetic number, because the mean of its divisors is an integer number (18903240).

Almost surely, 2^97666678 is an apocalyptic number.

97666678 is a deficient number, since it is larger than the sum of its proper divisors (53559242).

97666678 is a wasteful number, since it uses less digits than its factorization.

97666678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575302.

The product of its digits is 4572288, while the sum is 55.

The square root of 97666678 is about 9882.6452936448. The cubic root of 97666678 is about 460.5203280343.

Subtracting from 97666678 its reverse (87666679), we obtain a palindrome (9999999).

The spelling of 97666678 in words is "ninety-seven million, six hundred sixty-six thousand, six hundred seventy-eight".