77265473 has 2 divisors, whose sum is σ = 77265474. Its totient is φ = 77265472.

The previous prime is 77265451. The next prime is 77265491. The reversal of 77265473 is 37456277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53333809 + 23931664 = 7303^2 + 4892^2 .

It is a cyclic number.

It is not a de Polignac number, because 77265473 - 2⁸ = 77265217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77265473.

It is not a weakly prime, because it can be changed into another prime (77267473) 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, 38632736 + 38632737.

It is an arithmetic number, because the mean of its divisors is an integer number (38632737).

Almost surely, 2^77265473 is an apocalyptic number.

It is an amenable number.

77265473 is a deficient number, since it is larger than the sum of its proper divisors (1).

77265473 is an equidigital number, since it uses as much as digits as its factorization.

77265473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 41.

The square root of 77265473 is about 8790.0780997668. The cubic root of 77265473 is about 425.9204466199.

The spelling of 77265473 in words is "seventy-seven million, two hundred sixty-five thousand, four hundred seventy-three".