80499671 has 4 divisors (see below), whose sum is σ = 91999632. Its totient is φ = 68999712.

The previous prime is 80499649. The next prime is 80499677. The reversal of 80499671 is 17699408.

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

It is a cyclic number.

It is not a de Polignac number, because 80499671 - 2¹⁰ = 80498647 is a prime.

It is a super-2 number, since 2×80499671² = 12960394062216482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80499677) 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, 5749970 + ... + 5749983.

It is an arithmetic number, because the mean of its divisors is an integer number (22999908).

Almost surely, 2^80499671 is an apocalyptic number.

80499671 is a deficient number, since it is larger than the sum of its proper divisors (11499961).

80499671 is a wasteful number, since it uses less digits than its factorization.

80499671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499960.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 80499671 is about 8972.1608879913. The cubic root of 80499671 is about 431.7821671983.

The spelling of 80499671 in words is "eighty million, four hundred ninety-nine thousand, six hundred seventy-one".