7086861 has 6 divisors (see below), whose sum is σ = 10236590. Its totient is φ = 4724568.

The previous prime is 7086839. The next prime is 7086881. The reversal of 7086861 is 1686807.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 352836 = 2595^2 + 594^2 .

It is not a de Polignac number, because 7086861 - 2¹¹ = 7084813 is a prime.

It is a Duffinian number.

7086861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7086811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 393706 + ... + 393723.

Almost surely, 2^7086861 is an apocalyptic number.

It is an amenable number.

7086861 is a deficient number, since it is larger than the sum of its proper divisors (3149729).

7086861 is a wasteful number, since it uses less digits than its factorization.

7086861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787435 (or 787432 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 7086861 is about 2662.1158877855. The cubic root of 7086861 is about 192.0811018051.

It can be divided in two parts, 708 and 6861, that added together give a square (7569 = 87²).

The spelling of 7086861 in words is "seven million, eighty-six thousand, eight hundred sixty-one".