97678817 has 8 divisors (see below), whose sum is σ = 98915520. Its totient is φ = 96447600.

The previous prime is 97678793. The next prime is 97678871. The reversal of 97678817 is 71887679.

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

It is a cyclic number.

It is not a de Polignac number, because 97678817 - 2¹⁰ = 97677793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97678877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43238 + ... + 45440.

It is an arithmetic number, because the mean of its divisors is an integer number (12364440).

Almost surely, 2^97678817 is an apocalyptic number.

It is an amenable number.

97678817 is a deficient number, since it is larger than the sum of its proper divisors (1236703).

97678817 is a wasteful number, since it uses less digits than its factorization.

97678817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743.

The product of its digits is 1185408, while the sum is 53.

The square root of 97678817 is about 9883.2594319890. The cubic root of 97678817 is about 460.5394066146.

The spelling of 97678817 in words is "ninety-seven million, six hundred seventy-eight thousand, eight hundred seventeen".