97740643 has 72 divisors (see below), whose sum is σ = 142696080. Its totient is φ = 66044160.

The previous prime is 97740637. The next prime is 97740647. The reversal of 97740643 is 34604779.

It is not a de Polignac number, because 97740643 - 2⁹ = 97740131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97740596 and 97740605.

It is not an unprimeable number, because it can be changed into a prime (97740647) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2641621 + ... + 2641657.

It is an arithmetic number, because the mean of its divisors is an integer number (1981890).

Almost surely, 2^97740643 is an apocalyptic number.

97740643 is the 6253-rd heptagonal number.

97740643 is a deficient number, since it is larger than the sum of its proper divisors (44955437).

97740643 is a wasteful number, since it uses less digits than its factorization.

97740643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 97740643 is about 9886.3867514881. The cubic root of 97740643 is about 460.6365525634.

The spelling of 97740643 in words is "ninety-seven million, seven hundred forty thousand, six hundred forty-three".