80861061 has 16 divisors (see below), whose sum is σ = 116944128. Its totient is φ = 49497600.

The previous prime is 80861059. The next prime is 80861087. The reversal of 80861061 is 16016808.

It is not a de Polignac number, because 80861061 - 2¹ = 80861059 is a prime.

It is a super-2 number, since 2×80861061² = 13077022372091442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80861861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17245 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (7309008).

Almost surely, 2^80861061 is an apocalyptic number.

It is an amenable number.

80861061 is a deficient number, since it is larger than the sum of its proper divisors (36083067).

80861061 is a wasteful number, since it uses less digits than its factorization.

80861061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38732.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 80861061 is about 8992.2778538032. The cubic root of 80861061 is about 432.4273409744.

Adding to 80861061 its reverse (16016808), we get a palindrome (96877869).

The spelling of 80861061 in words is "eighty million, eight hundred sixty-one thousand, sixty-one".