87617065 has 16 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 64848640.

The previous prime is 87617063. The next prime is 87617069. The reversal of 87617065 is 56071678.

It is not a de Polignac number, because 87617065 - 2¹ = 87617063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87617063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3721 + ... + 13750.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 2^87617065 is an apocalyptic number.

87617065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87617065 is a deficient number, since it is larger than the sum of its proper divisors (25601495).

87617065 is a wasteful number, since it uses less digits than its factorization.

87617065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17552.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 87617065 is about 9360.3987628733. The cubic root of 87617065 is about 444.1498983227.

The spelling of 87617065 in words is "eighty-seven million, six hundred seventeen thousand, sixty-five".