80946917 has 8 divisors (see below), whose sum is σ = 83841240. Its totient is φ = 78059520.

The previous prime is 80946893. The next prime is 80946923. The reversal of 80946917 is 71964908.

It can be written as a sum of positive squares in 4 ways, for example, as 6280036 + 74666881 = 2506^2 + 8641^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 80946917 - 2¹² = 80942821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80946977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37253 + ... + 39365.

It is an arithmetic number, because the mean of its divisors is an integer number (10480155).

Almost surely, 2^80946917 is an apocalyptic number.

It is an amenable number.

80946917 is a deficient number, since it is larger than the sum of its proper divisors (2894323).

80946917 is a wasteful number, since it uses less digits than its factorization.

80946917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463.

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

The square root of 80946917 is about 8997.0504611234. The cubic root of 80946917 is about 432.5803332352.

Subtracting from 80946917 its reverse (71964908), we obtain a square (8982009 = 2997²).

The spelling of 80946917 in words is "eighty million, nine hundred forty-six thousand, nine hundred seventeen".