87062749 has 2 divisors, whose sum is σ = 87062750. Its totient is φ = 87062748.

The previous prime is 87062741. The next prime is 87062777. The reversal of 87062749 is 94726078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64689849 + 22372900 = 8043^2 + 4730^2 .

It is a cyclic number.

It is not a de Polignac number, because 87062749 - 2³ = 87062741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87062741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43531374 + 43531375.

It is an arithmetic number, because the mean of its divisors is an integer number (43531375).

Almost surely, 2^87062749 is an apocalyptic number.

It is an amenable number.

87062749 is a deficient number, since it is larger than the sum of its proper divisors (1).

87062749 is an equidigital number, since it uses as much as digits as its factorization.

87062749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 87062749 is about 9330.7421462604. The cubic root of 87062749 is about 443.2112667622.

The spelling of 87062749 in words is "eighty-seven million, sixty-two thousand, seven hundred forty-nine".