97688539 has 8 divisors (see below), whose sum is σ = 106187760. Its totient is φ = 89330016.

The previous prime is 97688537. The next prime is 97688551. The reversal of 97688539 is 93588679.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 97688539 - 2¹ = 97688537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97688539.

It is not an unprimeable number, because it can be changed into a prime (97688537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33724 + ... + 36505.

It is an arithmetic number, because the mean of its divisors is an integer number (13273470).

Almost surely, 2^97688539 is an apocalyptic number.

97688539 is a deficient number, since it is larger than the sum of its proper divisors (8499221).

97688539 is a wasteful number, since it uses less digits than its factorization.

97688539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70349.

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

The square root of 97688539 is about 9883.7512615403. The cubic root of 97688539 is about 460.5546853131.

The spelling of 97688539 in words is "ninety-seven million, six hundred eighty-eight thousand, five hundred thirty-nine".