87734729 has 2 divisors, whose sum is σ = 87734730. Its totient is φ = 87734728.

The previous prime is 87734707. The next prime is 87734753. The reversal of 87734729 is 92743778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59644729 + 28090000 = 7723^2 + 5300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87734729 is a prime.

It is not a weakly prime, because it can be changed into another prime (87734789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43867364 + 43867365.

It is an arithmetic number, because the mean of its divisors is an integer number (43867365).

Almost surely, 2^87734729 is an apocalyptic number.

It is an amenable number.

87734729 is a deficient number, since it is larger than the sum of its proper divisors (1).

87734729 is an equidigital number, since it uses as much as digits as its factorization.

87734729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 47.

The square root of 87734729 is about 9366.6818564527. The cubic root of 87734729 is about 444.3486308297.

The spelling of 87734729 in words is "eighty-seven million, seven hundred thirty-four thousand, seven hundred twenty-nine".