80671937 has 2 divisors, whose sum is σ = 80671938. Its totient is φ = 80671936.

The previous prime is 80671931. The next prime is 80671949. The reversal of 80671937 is 73917608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 22363441 = 7636^2 + 4729^2 .

It is a cyclic number.

It is not a de Polignac number, because 80671937 - 2⁶ = 80671873 is a prime.

It is a super-2 number, since 2×80671937² = 13015922838663938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80671894 and 80671903.

It is not a weakly prime, because it can be changed into another prime (80671931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40335968 + 40335969.

It is an arithmetic number, because the mean of its divisors is an integer number (40335969).

Almost surely, 2^80671937 is an apocalyptic number.

It is an amenable number.

80671937 is a deficient number, since it is larger than the sum of its proper divisors (1).

80671937 is an equidigital number, since it uses as much as digits as its factorization.

80671937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 80671937 is about 8981.7557860365. The cubic root of 80671937 is about 432.0899464773.

The spelling of 80671937 in words is "eighty million, six hundred seventy-one thousand, nine hundred thirty-seven".