87835723 has 2 divisors, whose sum is σ = 87835724. Its totient is φ = 87835722.

The previous prime is 87835721. The next prime is 87835739. The reversal of 87835723 is 32753878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87835723 - 2¹ = 87835721 is a prime.

It is a super-2 number, since 2×87835723² = 15430228469865458, which contains 22 as substring.

Together with 87835721, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 87835723.

It is not a weakly prime, because it can be changed into another prime (87835721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43917861 + 43917862.

It is an arithmetic number, because the mean of its divisors is an integer number (43917862).

Almost surely, 2^87835723 is an apocalyptic number.

87835723 is a deficient number, since it is larger than the sum of its proper divisors (1).

87835723 is an equidigital number, since it uses as much as digits as its factorization.

87835723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 87835723 is about 9372.0714359207. The cubic root of 87835723 is about 444.5190663291.

The spelling of 87835723 in words is "eighty-seven million, eight hundred thirty-five thousand, seven hundred twenty-three".