87604145 has 8 divisors (see below), whose sum is σ = 111308904. Its totient is φ = 65960704.

The previous prime is 87604091. The next prime is 87604147. The reversal of 87604145 is 54140678.

It can be written as a sum of positive squares in 4 ways, for example, as 5230369 + 82373776 = 2287^2 + 9076^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 87604145 - 2⁶ = 87604081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87604147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515234 + ... + 515403.

It is an arithmetic number, because the mean of its divisors is an integer number (13913613).

Almost surely, 2^87604145 is an apocalyptic number.

87604145 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87604145 is a deficient number, since it is larger than the sum of its proper divisors (23704759).

87604145 is a wasteful number, since it uses less digits than its factorization.

87604145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030659.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 87604145 is about 9359.7085958912. The cubic root of 87604145 is about 444.1280658225.

The spelling of 87604145 in words is "eighty-seven million, six hundred four thousand, one hundred forty-five".