87261743 has 2 divisors, whose sum is σ = 87261744. Its totient is φ = 87261742.

The previous prime is 87261709. The next prime is 87261763. The reversal of 87261743 is 34716278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87261743 - 2⁶ = 87261679 is a prime.

It is a super-2 number, since 2×87261743² = 15229223582796098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87261697 and 87261706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87261763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43630871 + 43630872.

It is an arithmetic number, because the mean of its divisors is an integer number (43630872).

Almost surely, 2^87261743 is an apocalyptic number.

87261743 is a deficient number, since it is larger than the sum of its proper divisors (1).

87261743 is an equidigital number, since it uses as much as digits as its factorization.

87261743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 87261743 is about 9341.3994133641. The cubic root of 87261743 is about 443.5486834492.

The spelling of 87261743 in words is "eighty-seven million, two hundred sixty-one thousand, seven hundred forty-three".