80670761 has 2 divisors, whose sum is σ = 80670762. Its totient is φ = 80670760.

The previous prime is 80670749. The next prime is 80670787. The reversal of 80670761 is 16707608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63696361 + 16974400 = 7981^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 80670761 - 2¹⁴ = 80654377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80670061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40335380 + 40335381.

It is an arithmetic number, because the mean of its divisors is an integer number (40335381).

Almost surely, 2^80670761 is an apocalyptic number.

It is an amenable number.

80670761 is a deficient number, since it is larger than the sum of its proper divisors (1).

80670761 is an equidigital number, since it uses as much as digits as its factorization.

80670761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 80670761 is about 8981.6903197561. The cubic root of 80670761 is about 432.0878468614.

The spelling of 80670761 in words is "eighty million, six hundred seventy thousand, seven hundred sixty-one".