97689538 has 8 divisors (see below), whose sum is σ = 147075840. Its totient is φ = 48664260.

The previous prime is 97689521. The next prime is 97689541. The reversal of 97689538 is 83598679.

It is a happy number.

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

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, 89578 + ... + 90661.

It is an arithmetic number, because the mean of its divisors is an integer number (18384480).

Almost surely, 2^97689538 is an apocalyptic number.

97689538 is a deficient number, since it is larger than the sum of its proper divisors (49386302).

97689538 is a wasteful number, since it uses less digits than its factorization.

97689538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180512.

The product of its digits is 3265920, while the sum is 55.

The square root of 97689538 is about 9883.8017989031. The cubic root of 97689538 is about 460.5562552433.

It can be divided in two parts, 9768 and 9538, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 97689538 in words is "ninety-seven million, six hundred eighty-nine thousand, five hundred thirty-eight".