77360401 has 2 divisors, whose sum is σ = 77360402. Its totient is φ = 77360400.

The previous prime is 77360369. The next prime is 77360441. The reversal of 77360401 is 10406377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77018176 + 342225 = 8776^2 + 585^2 .

It is an emirp because it is prime and its reverse (10406377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77360401 - 2⁵ = 77360369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77360401.

It is not a weakly prime, because it can be changed into another prime (77360441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38680200 + 38680201.

It is an arithmetic number, because the mean of its divisors is an integer number (38680201).

Almost surely, 2^77360401 is an apocalyptic number.

It is an amenable number.

77360401 is a deficient number, since it is larger than the sum of its proper divisors (1).

77360401 is an equidigital number, since it uses as much as digits as its factorization.

77360401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 77360401 is about 8795.4761667575. The cubic root of 77360401 is about 426.0948031933.

Adding to 77360401 its reverse (10406377), we get a palindrome (87766778).

The spelling of 77360401 in words is "seventy-seven million, three hundred sixty thousand, four hundred one".