78880187 has 8 divisors (see below), whose sum is σ = 85558032. Its totient is φ = 72428800.

The previous prime is 78880183. The next prime is 78880201. The reversal of 78880187 is 78108887.

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 78880187 - 2² = 78880183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78880183) 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 7 ways as a sum of consecutive naturals, for example, 55889 + ... + 57282.

It is an arithmetic number, because the mean of its divisors is an integer number (10694754).

Almost surely, 2^78880187 is an apocalyptic number.

78880187 is a deficient number, since it is larger than the sum of its proper divisors (6677845).

78880187 is a wasteful number, since it uses less digits than its factorization.

78880187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113229.

The product of its (nonzero) digits is 200704, while the sum is 47.

The square root of 78880187 is about 8881.4518520341. The cubic root of 78880187 is about 428.8670137656.

The spelling of 78880187 in words is "seventy-eight million, eight hundred eighty thousand, one hundred eighty-seven".