97644036 has 96 divisors (see below), whose sum is σ = 271192320. Its totient is φ = 26763264.

The previous prime is 97644031. The next prime is 97644037. The reversal of 97644036 is 63044679.

It is a junction number, because it is equal to n+sod(n) for n = 97643985 and 97644003.

It is not an unprimeable number, because it can be changed into a prime (97644031) 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 31 ways as a sum of consecutive naturals, for example, 276436 + ... + 276788.

It is an arithmetic number, because the mean of its divisors is an integer number (2824920).

Almost surely, 2^97644036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97644036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135596160).

97644036 is an abundant number, since it is smaller than the sum of its proper divisors (173548284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97644036 is a wasteful number, since it uses less digits than its factorization.

97644036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 97644036 is about 9881.4996837525. The cubic root of 97644036 is about 460.4847379117.

The spelling of 97644036 in words is "ninety-seven million, six hundred forty-four thousand, thirty-six".