77441641 has 2 divisors, whose sum is σ = 77441642. Its totient is φ = 77441640.

The previous prime is 77441593. The next prime is 77441653. The reversal of 77441641 is 14614477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63936016 + 13505625 = 7996^2 + 3675^2 .

It is a cyclic number.

It is not a de Polignac number, because 77441641 - 2⁹ = 77441129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77441597 and 77441606.

It is not a weakly prime, because it can be changed into another prime (77441041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38720820 + 38720821.

It is an arithmetic number, because the mean of its divisors is an integer number (38720821).

Almost surely, 2^77441641 is an apocalyptic number.

It is an amenable number.

77441641 is a deficient number, since it is larger than the sum of its proper divisors (1).

77441641 is an equidigital number, since it uses as much as digits as its factorization.

77441641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 34.

The square root of 77441641 is about 8800.0932381424. The cubic root of 77441641 is about 426.2439054520.

The spelling of 77441641 in words is "seventy-seven million, four hundred forty-one thousand, six hundred forty-one".