97709643 has 6 divisors (see below), whose sum is σ = 141136164. Its totient is φ = 65139756.

The previous prime is 97709641. The next prime is 97709657. The reversal of 97709643 is 34690779.

It is not a de Polignac number, because 97709643 - 2¹ = 97709641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97709641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5428305 + ... + 5428322.

It is an arithmetic number, because the mean of its divisors is an integer number (23522694).

Almost surely, 2^97709643 is an apocalyptic number.

97709643 is a deficient number, since it is larger than the sum of its proper divisors (43426521).

97709643 is a wasteful number, since it uses less digits than its factorization.

97709643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856633 (or 10856630 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 97709643 is about 9884.8188147280. The cubic root of 97709643 is about 460.5878480100.

The spelling of 97709643 in words is "ninety-seven million, seven hundred nine thousand, six hundred forty-three".