80861246 has 4 divisors (see below), whose sum is σ = 121291872. Its totient is φ = 40430622.

The previous prime is 80861239. The next prime is 80861273. The reversal of 80861246 is 64216808.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×80861246² = 13077082209345032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20215310 + ... + 20215313.

It is an arithmetic number, because the mean of its divisors is an integer number (30322968).

Almost surely, 2^80861246 is an apocalyptic number.

80861246 is a deficient number, since it is larger than the sum of its proper divisors (40430626).

80861246 is a wasteful number, since it uses less digits than its factorization.

80861246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40430625.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 80861246 is about 8992.2881404012. The cubic root of 80861246 is about 432.4276707541.

The spelling of 80861246 in words is "eighty million, eight hundred sixty-one thousand, two hundred forty-six".