87566741 has 2 divisors, whose sum is σ = 87566742. Its totient is φ = 87566740.

The previous prime is 87566729. The next prime is 87566777. The reversal of 87566741 is 14766578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63840100 + 23726641 = 7990^2 + 4871^2 .

It is a cyclic number.

It is not a de Polignac number, because 87566741 - 2¹⁸ = 87304597 is a prime.

It is a super-2 number, since 2×87566741² = 15335868258722162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87566692 and 87566701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87566641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43783370 + 43783371.

It is an arithmetic number, because the mean of its divisors is an integer number (43783371).

Almost surely, 2^87566741 is an apocalyptic number.

It is an amenable number.

87566741 is a deficient number, since it is larger than the sum of its proper divisors (1).

87566741 is an equidigital number, since it uses as much as digits as its factorization.

87566741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 87566741 is about 9357.7102434303. The cubic root of 87566741 is about 444.0648476152.

The spelling of 87566741 in words is "eighty-seven million, five hundred sixty-six thousand, seven hundred forty-one".