77600401 has 2 divisors, whose sum is σ = 77600402. Its totient is φ = 77600400.

The previous prime is 77600381. The next prime is 77600407. The reversal of 77600401 is 10400677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46908801 + 30691600 = 6849^2 + 5540^2 .

It is a cyclic number.

It is not a de Polignac number, because 77600401 - 2⁷ = 77600273 is a prime.

It is not a weakly prime, because it can be changed into another prime (77600407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38800200 + 38800201.

It is an arithmetic number, because the mean of its divisors is an integer number (38800201).

Almost surely, 2^77600401 is an apocalyptic number.

It is an amenable number.

77600401 is a deficient number, since it is larger than the sum of its proper divisors (1).

77600401 is an equidigital number, since it uses as much as digits as its factorization.

77600401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 77600401 is about 8809.1089787787. The cubic root of 77600401 is about 426.5349818088.

The spelling of 77600401 in words is "seventy-seven million, six hundred thousand, four hundred one".