87011770 has 8 divisors (see below), whose sum is σ = 156621204. Its totient is φ = 34804704.

The previous prime is 87011767. The next prime is 87011779. The reversal of 87011770 is 7711078.

It can be written as a sum of positive squares in 2 ways, for example, as 78872161 + 8139609 = 8881^2 + 2853^2 .

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 (87011779) 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, 4350579 + ... + 4350598.

Almost surely, 2^87011770 is an apocalyptic number.

87011770 is a deficient number, since it is larger than the sum of its proper divisors (69609434).

87011770 is a wasteful number, since it uses less digits than its factorization.

87011770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701184.

The product of its (nonzero) digits is 2744, while the sum is 31.

The square root of 87011770 is about 9328.0099699775. The cubic root of 87011770 is about 443.1247434256.

The spelling of 87011770 in words is "eighty-seven million, eleven thousand, seven hundred seventy".