87284641 has 2 divisors, whose sum is σ = 87284642. Its totient is φ = 87284640.

The previous prime is 87284629. The next prime is 87284663. The reversal of 87284641 is 14648278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71910400 + 15374241 = 8480^2 + 3921^2 .

It is a cyclic number.

It is not a de Polignac number, because 87284641 - 2¹⁵ = 87251873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87284594 and 87284603.

It is not a weakly prime, because it can be changed into another prime (87284441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43642320 + 43642321.

It is an arithmetic number, because the mean of its divisors is an integer number (43642321).

Almost surely, 2^87284641 is an apocalyptic number.

It is an amenable number.

87284641 is a deficient number, since it is larger than the sum of its proper divisors (1).

87284641 is an equidigital number, since it uses as much as digits as its factorization.

87284641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 40.

The square root of 87284641 is about 9342.6249523354. The cubic root of 87284641 is about 443.5874766598.

The spelling of 87284641 in words is "eighty-seven million, two hundred eighty-four thousand, six hundred forty-one".