87641170 has 8 divisors (see below), whose sum is σ = 157754124. Its totient is φ = 35056464.

The previous prime is 87641143. The next prime is 87641173. The reversal of 87641170 is 7114678.

It can be written as a sum of positive squares in 2 ways, for example, as 78659161 + 8982009 = 8869^2 + 2997^2 .

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 (87641173) 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, 4382049 + ... + 4382068.

Almost surely, 2^87641170 is an apocalyptic number.

87641170 is a deficient number, since it is larger than the sum of its proper divisors (70112954).

87641170 is a wasteful number, since it uses less digits than its factorization.

87641170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764124.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 87641170 is about 9361.6862797255. The cubic root of 87641170 is about 444.1906257450.

The spelling of 87641170 in words is "eighty-seven million, six hundred forty-one thousand, one hundred seventy".