78898197 has 16 divisors (see below), whose sum is σ = 120408192. Its totient is φ = 45016320.

The previous prime is 78898189. The next prime is 78898201. The reversal of 78898197 is 79189887.

It is not a de Polignac number, because 78898197 - 2³ = 78898189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78898117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13513 + ... + 18449.

It is an arithmetic number, because the mean of its divisors is an integer number (7525512).

Almost surely, 2^78898197 is an apocalyptic number.

It is an amenable number.

78898197 is a deficient number, since it is larger than the sum of its proper divisors (41509995).

78898197 is a wasteful number, since it uses less digits than its factorization.

78898197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708.

The product of its digits is 2032128, while the sum is 57.

The square root of 78898197 is about 8882.4657049718. The cubic root of 78898197 is about 428.8996510579.

The spelling of 78898197 in words is "seventy-eight million, eight hundred ninety-eight thousand, one hundred ninety-seven".