80861894 has 8 divisors (see below), whose sum is σ = 128427768. Its totient is φ = 38052640.

The previous prime is 80861867. The next prime is 80861897. The reversal of 80861894 is 49816808.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80861897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189112 + ... + 1189179.

It is an arithmetic number, because the mean of its divisors is an integer number (16053471).

Almost surely, 2^80861894 is an apocalyptic number.

80861894 is a deficient number, since it is larger than the sum of its proper divisors (47565874).

80861894 is a wasteful number, since it uses less digits than its factorization.

80861894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378310.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 80861894 is about 8992.3241712029. The cubic root of 80861894 is about 432.4288258702.

The spelling of 80861894 in words is "eighty million, eight hundred sixty-one thousand, eight hundred ninety-four".