97689405 has 16 divisors (see below), whose sum is σ = 170512704. Its totient is φ = 47364480.

The previous prime is 97689391. The next prime is 97689409. The reversal of 97689405 is 50498679.

It is not a de Polignac number, because 97689405 - 2⁵ = 97689373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97689409) 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 15 ways as a sum of consecutive naturals, for example, 295864 + ... + 296193.

It is an arithmetic number, because the mean of its divisors is an integer number (10657044).

Almost surely, 2^97689405 is an apocalyptic number.

It is an amenable number.

97689405 is a deficient number, since it is larger than the sum of its proper divisors (72823299).

97689405 is a wasteful number, since it uses less digits than its factorization.

97689405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592076.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 97689405 is about 9883.7950707206. The cubic root of 97689405 is about 460.5560462342.

The spelling of 97689405 in words is "ninety-seven million, six hundred eighty-nine thousand, four hundred five".