87881386 has 8 divisors (see below), whose sum is σ = 133678944. Its totient is φ = 43321740.

The previous prime is 87881377. The next prime is 87881389. The reversal of 87881386 is 68318878.

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

It is not an unprimeable number, because it can be changed into a prime (87881389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309300 + ... + 309583.

It is an arithmetic number, because the mean of its divisors is an integer number (16709868).

Almost surely, 2^87881386 is an apocalyptic number.

87881386 is a deficient number, since it is larger than the sum of its proper divisors (45797558).

87881386 is a wasteful number, since it uses less digits than its factorization.

87881386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618956.

The product of its digits is 516096, while the sum is 49.

The square root of 87881386 is about 9374.5072403834. The cubic root of 87881386 is about 444.5960834281.

The spelling of 87881386 in words is "eighty-seven million, eight hundred eighty-one thousand, three hundred eighty-six".