87611730 has 16 divisors (see below), whose sum is σ = 210268224. Its totient is φ = 23363120.

The previous prime is 87611663. The next prime is 87611731. The reversal of 87611730 is 3711678.

It is a junction number, because it is equal to n+sod(n) for n = 87611691 and 87611700.

It is not an unprimeable number, because it can be changed into a prime (87611731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460166 + ... + 1460225.

It is an arithmetic number, because the mean of its divisors is an integer number (13141764).

Almost surely, 2^87611730 is an apocalyptic number.

87611730 is an abundant number, since it is smaller than the sum of its proper divisors (122656494).

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

87611730 is a wasteful number, since it uses less digits than its factorization.

87611730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920401.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 87611730 is about 9360.1137813597. The cubic root of 87611730 is about 444.1408833825.

The spelling of 87611730 in words is "eighty-seven million, six hundred eleven thousand, seven hundred thirty".