87361645 has 16 divisors (see below), whose sum is σ = 120256128. Its totient is φ = 59682240.

The previous prime is 87361633. The next prime is 87361661. The reversal of 87361645 is 54616378.

It is a happy number.

It is not a de Polignac number, because 87361645 - 2⁹ = 87361133 is a prime.

It is a super-3 number, since 3×87361645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87361598 and 87361607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5190 + ... + 14200.

It is an arithmetic number, because the mean of its divisors is an integer number (7516008).

Almost surely, 2^87361645 is an apocalyptic number.

It is an amenable number.

87361645 is a deficient number, since it is larger than the sum of its proper divisors (32894483).

87361645 is a wasteful number, since it uses less digits than its factorization.

87361645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9300.

The product of its digits is 120960, while the sum is 40.

The square root of 87361645 is about 9346.7451554004. The cubic root of 87361645 is about 443.7178851320.

The spelling of 87361645 in words is "eighty-seven million, three hundred sixty-one thousand, six hundred forty-five".