97564321 has 12 divisors (see below), whose sum is σ = 103004352. Its totient is φ = 92235528.

The previous prime is 97564303. The next prime is 97564333. The reversal of 97564321 is 12346579.

It is a de Polignac number, because none of the positive numbers 2^k-97564321 is a prime.

It is a Duffinian number.

Its product of digits (45360) is a multiple of the sum of its prime factors (540).

It is not an unprimeable number, because it can be changed into a prime (97564391) 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 11 ways as a sum of consecutive naturals, for example, 370836 + ... + 371098.

It is an arithmetic number, because the mean of its divisors is an integer number (8583696).

Almost surely, 2^97564321 is an apocalyptic number.

It is an amenable number.

97564321 is a deficient number, since it is larger than the sum of its proper divisors (5440031).

97564321 is a wasteful number, since it uses less digits than its factorization.

97564321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 413 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 97564321 is about 9877.4653125182. The cubic root of 97564321 is about 460.3593930500.

The spelling of 97564321 in words is "ninety-seven million, five hundred sixty-four thousand, three hundred twenty-one".