87801078 has 8 divisors (see below), whose sum is σ = 175602168. Its totient is φ = 29267024.

The previous prime is 87801061. The next prime is 87801089. The reversal of 87801078 is 87010878.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

87801078 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7316751 + ... + 7316762.

It is an arithmetic number, because the mean of its divisors is an integer number (21950271).

Almost surely, 2^87801078 is an apocalyptic number.

87801078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87801078 is a wasteful number, since it uses less digits than its factorization.

87801078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14633518.

The product of its (nonzero) digits is 25088, while the sum is 39.

The square root of 87801078 is about 9370.2229429187. Note that the first 3 decimals coincide. The cubic root of 87801078 is about 444.4606148330.

The spelling of 87801078 in words is "eighty-seven million, eight hundred one thousand, seventy-eight".