78998275 has 6 divisors (see below), whose sum is σ = 97957892. Its totient is φ = 63198600.

The previous prime is 78998251. The next prime is 78998279. The reversal of 78998275 is 57289987.

It is not a de Polignac number, because 78998275 - 2⁵ = 78998243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78998279) 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 5 ways as a sum of consecutive naturals, for example, 1579941 + ... + 1579990.

Almost surely, 2^78998275 is an apocalyptic number.

78998275 is a deficient number, since it is larger than the sum of its proper divisors (18959617).

78998275 is a wasteful number, since it uses less digits than its factorization.

78998275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159941 (or 3159936 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 55.

The square root of 78998275 is about 8888.0973779544. The cubic root of 78998275 is about 429.0809195998.

The spelling of 78998275 in words is "seventy-eight million, nine hundred ninety-eight thousand, two hundred seventy-five".