80671617 has 24 divisors (see below), whose sum is σ = 126053928. Its totient is φ = 49420800.

The previous prime is 80671609. The next prime is 80671621. The reversal of 80671617 is 71617608.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9960336 + 70711281 = 3156^2 + 8409^2 .

It is not a de Polignac number, because 80671617 - 2³ = 80671609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80671637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26767 + ... + 29627.

It is an arithmetic number, because the mean of its divisors is an integer number (5252247).

Almost surely, 2^80671617 is an apocalyptic number.

It is an amenable number.

80671617 is a deficient number, since it is larger than the sum of its proper divisors (45382311).

80671617 is a wasteful number, since it uses less digits than its factorization.

80671617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 80671617 is about 8981.7379721299. The cubic root of 80671617 is about 432.0893751553.

The spelling of 80671617 in words is "eighty million, six hundred seventy-one thousand, six hundred seventeen".