97489666 has 8 divisors (see below), whose sum is σ = 146286864. Its totient is φ = 48727380.

The previous prime is 97489633. The next prime is 97489669. The reversal of 97489666 is 66698479.

97489666 is a nontrivial binomial coefficient, being equal to C(13964, 2).

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

It is not an unprimeable number, because it can be changed into a prime (97489669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 13963.

It is an arithmetic number, because the mean of its divisors is an integer number (18285858).

Almost surely, 2^97489666 is an apocalyptic number.

97489666 is the 13963-rd triangular number and also the 6982-nd hexagonal number.

97489666 is the 4655-th centered nonagonal number.

97489666 is a deficient number, since it is larger than the sum of its proper divisors (48797198).

97489666 is a wasteful number, since it uses less digits than its factorization.

97489666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17456.

The product of its digits is 3919104, while the sum is 55.

The square root of 97489666 is about 9873.6855327684. The cubic root of 97489666 is about 460.2419426683.

The spelling of 97489666 in words is "ninety-seven million, four hundred eighty-nine thousand, six hundred sixty-six".