97497643 has 4 divisors (see below), whose sum is σ = 98360568. Its totient is φ = 96634720.

The previous prime is 97497593. The next prime is 97497689. The reversal of 97497643 is 34679479.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97497643 - 2⁹ = 97497131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97497343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431293 + ... + 431518.

It is an arithmetic number, because the mean of its divisors is an integer number (24590142).

Almost surely, 2^97497643 is an apocalyptic number.

97497643 is a deficient number, since it is larger than the sum of its proper divisors (862925).

97497643 is a wasteful number, since it uses less digits than its factorization.

97497643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862924.

The product of its digits is 1143072, while the sum is 49.

The square root of 97497643 is about 9874.0894770100. The cubic root of 97497643 is about 460.2544952802.

The spelling of 97497643 in words is "ninety-seven million, four hundred ninety-seven thousand, six hundred forty-three".