97678959 has 16 divisors (see below), whose sum is σ = 149490432. Its totient is φ = 55574208.

The previous prime is 97678949. The next prime is 97678961. The reversal of 97678959 is 95987679.

It is not a de Polignac number, because 97678959 - 2¹⁵ = 97646191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97678939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5089 + ... + 14874.

It is an arithmetic number, because the mean of its divisors is an integer number (9343152).

Almost surely, 2^97678959 is an apocalyptic number.

97678959 is a deficient number, since it is larger than the sum of its proper divisors (51811473).

97678959 is a wasteful number, since it uses less digits than its factorization.

97678959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20206.

The product of its digits is 8573040, while the sum is 60.

The square root of 97678959 is about 9883.2666158513. The cubic root of 97678959 is about 460.5396297833.

The spelling of 97678959 in words is "ninety-seven million, six hundred seventy-eight thousand, nine hundred fifty-nine".