87061878 has 40 divisors (see below), whose sum is σ = 195619248. Its totient is φ = 28940976.

The previous prime is 87061873. The next prime is 87061951. The reversal of 87061878 is 87816078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87061873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105375 + ... + 106197.

Almost surely, 2^87061878 is an apocalyptic number.

87061878 is an abundant number, since it is smaller than the sum of its proper divisors (108557370).

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

87061878 is a wasteful number, since it uses less digits than its factorization.

87061878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490 (or 1481 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 87061878 is about 9330.6954724715. The cubic root of 87061878 is about 443.2097887543.

The spelling of 87061878 in words is "eighty-seven million, sixty-one thousand, eight hundred seventy-eight".