97497998866 has 8 divisors (see below), whose sum is σ = 146293866684. Its totient is φ = 48733376640.

The previous prime is 97497998863. The next prime is 97497998921. The reversal of 97497998866 is 66889979479.

It is a happy number.

97497998866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 97496940025 + 1058841 = 312245^2 + 1029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 97497998866.

It is not an unprimeable number, because it can be changed into a prime (97497998863) 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, 7803595 + ... + 7816078.

Almost surely, 2^97497998866 is an apocalyptic number.

97497998866 is a deficient number, since it is larger than the sum of its proper divisors (48795867818).

97497998866 is a wasteful number, since it uses less digits than its factorization.

97497998866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15622796.

The product of its digits is 2962842624, while the sum is 82.

It can be divided in two parts, 974979 and 98866, that added together give a triangular number (1073845 = T₁₄₆₅).

The spelling of 97497998866 in words is "ninety-seven billion, four hundred ninety-seven million, nine hundred ninety-eight thousand, eight hundred sixty-six".