80945366 has 4 divisors (see below), whose sum is σ = 121418052. Its totient is φ = 40472682.

The previous prime is 80945329. The next prime is 80945369. The reversal of 80945366 is 66354908.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80945369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20236340 + ... + 20236343.

It is an arithmetic number, because the mean of its divisors is an integer number (30354513).

Almost surely, 2^80945366 is an apocalyptic number.

80945366 is a deficient number, since it is larger than the sum of its proper divisors (40472686).

80945366 is a wasteful number, since it uses less digits than its factorization.

80945366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40472685.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 80945366 is about 8996.9642657954. The cubic root of 80945366 is about 432.5775703695.

The spelling of 80945366 in words is "eighty million, nine hundred forty-five thousand, three hundred sixty-six".