97689818 has 8 divisors (see below), whose sum is σ = 146631060. Its totient is φ = 48812800.

The previous prime is 97689817. The next prime is 97689847. The reversal of 97689818 is 81898679.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 97673689 + 16129 = 9883^2 + 127^2 .

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 (97689817) 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, 12053 + ... + 18456.

Almost surely, 2^97689818 is an apocalyptic number.

97689818 is a deficient number, since it is larger than the sum of its proper divisors (48941242).

97689818 is a wasteful number, since it uses less digits than its factorization.

97689818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32112.

The product of its digits is 1741824, while the sum is 56.

The square root of 97689818 is about 9883.8159634829. The cubic root of 97689818 is about 460.5566952618.

The spelling of 97689818 in words is "ninety-seven million, six hundred eighty-nine thousand, eight hundred eighteen".