87448637 has 2 divisors, whose sum is σ = 87448638. Its totient is φ = 87448636.

The previous prime is 87448631. The next prime is 87448667. The reversal of 87448637 is 73684478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51998521 + 35450116 = 7211^2 + 5954^2 .

It is a cyclic number.

It is not a de Polignac number, because 87448637 - 2¹⁸ = 87186493 is a prime.

It is a super-2 number, since 2×87448637² = 15294528226315538, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87448591 and 87448600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87448631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43724318 + 43724319.

It is an arithmetic number, because the mean of its divisors is an integer number (43724319).

Almost surely, 2^87448637 is an apocalyptic number.

It is an amenable number.

87448637 is a deficient number, since it is larger than the sum of its proper divisors (1).

87448637 is an equidigital number, since it uses as much as digits as its factorization.

87448637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 47.

The square root of 87448637 is about 9351.3975960816. The cubic root of 87448637 is about 443.8651164147.

The spelling of 87448637 in words is "eighty-seven million, four hundred forty-eight thousand, six hundred thirty-seven".