80613641 has 2 divisors, whose sum is σ = 80613642. Its totient is φ = 80613640.

The previous prime is 80613623. The next prime is 80613653. The reversal of 80613641 is 14631608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78145600 + 2468041 = 8840^2 + 1571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80613641 is a prime.

It is not a weakly prime, because it can be changed into another prime (80613661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40306820 + 40306821.

It is an arithmetic number, because the mean of its divisors is an integer number (40306821).

Almost surely, 2^80613641 is an apocalyptic number.

It is an amenable number.

80613641 is a deficient number, since it is larger than the sum of its proper divisors (1).

80613641 is an equidigital number, since it uses as much as digits as its factorization.

80613641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 80613641 is about 8978.5099543298. The cubic root of 80613641 is about 431.9858409425.

The spelling of 80613641 in words is "eighty million, six hundred thirteen thousand, six hundred forty-one".