68077553 has 2 divisors, whose sum is σ = 68077554. Its totient is φ = 68077552.

The previous prime is 68077549. The next prime is 68077567. The reversal of 68077553 is 35577086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38353249 + 29724304 = 6193^2 + 5452^2 .

It is a cyclic number.

It is not a de Polignac number, because 68077553 - 2² = 68077549 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 68077553.

It is not a weakly prime, because it can be changed into another prime (68077523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34038776 + 34038777.

It is an arithmetic number, because the mean of its divisors is an integer number (34038777).

Almost surely, 2^68077553 is an apocalyptic number.

It is an amenable number.

68077553 is a deficient number, since it is larger than the sum of its proper divisors (1).

68077553 is an equidigital number, since it uses as much as digits as its factorization.

68077553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 68077553 is about 8250.9122525936. The cubic root of 68077553 is about 408.3206201604.

The spelling of 68077553 in words is "sixty-eight million, seventy-seven thousand, five hundred fifty-three".