87734813 has 2 divisors, whose sum is σ = 87734814. Its totient is φ = 87734812.

The previous prime is 87734809. The next prime is 87734827. The reversal of 87734813 is 31843778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 42549529 = 6722^2 + 6523^2 .

It is a cyclic number.

It is not a de Polignac number, because 87734813 - 2² = 87734809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87734873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43867406 + 43867407.

It is an arithmetic number, because the mean of its divisors is an integer number (43867407).

Almost surely, 2^87734813 is an apocalyptic number.

It is an amenable number.

87734813 is a deficient number, since it is larger than the sum of its proper divisors (1).

87734813 is an equidigital number, since it uses as much as digits as its factorization.

87734813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 87734813 is about 9366.6863404301. The cubic root of 87734813 is about 444.3487726408.

The spelling of 87734813 in words is "eighty-seven million, seven hundred thirty-four thousand, eight hundred thirteen".