78895087 has 4 divisors (see below), whose sum is σ = 83047480. Its totient is φ = 74742696.

The previous prime is 78895081. The next prime is 78895121. The reversal of 78895087 is 78059887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78059887 = 131 ⋅595877.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78895087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78895081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2076168 + ... + 2076205.

It is an arithmetic number, because the mean of its divisors is an integer number (20761870).

Almost surely, 2^78895087 is an apocalyptic number.

78895087 is a deficient number, since it is larger than the sum of its proper divisors (4152393).

78895087 is a wasteful number, since it uses less digits than its factorization.

78895087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4152392.

The product of its (nonzero) digits is 1128960, while the sum is 52.

The square root of 78895087 is about 8882.2906392439. The cubic root of 78895087 is about 428.8940155449.

The spelling of 78895087 in words is "seventy-eight million, eight hundred ninety-five thousand, eighty-seven".