87321465 has 144 divisors (see below), whose sum is σ = 199180800. Its totient is φ = 34594560.

The previous prime is 87321463. The next prime is 87321497. The reversal of 87321465 is 56412378.

It is not a de Polignac number, because 87321465 - 2¹ = 87321463 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87321463) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1105296 + ... + 1105374.

It is an arithmetic number, because the mean of its divisors is an integer number (1383200).

Almost surely, 2^87321465 is an apocalyptic number.

It is an amenable number.

87321465 is an abundant number, since it is smaller than the sum of its proper divisors (111859335).

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

87321465 is a wasteful number, since it uses less digits than its factorization.

87321465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 134 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 87321465 is about 9344.5954968634. The cubic root of 87321465 is about 443.6498487201.

The spelling of 87321465 in words is "eighty-seven million, three hundred twenty-one thousand, four hundred sixty-five".