67764313 has 2 divisors, whose sum is σ = 67764314. Its totient is φ = 67764312.

The previous prime is 67764293. The next prime is 67764341. The reversal of 67764313 is 31346776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66536649 + 1227664 = 8157^2 + 1108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67764313 is a prime.

It is not a weakly prime, because it can be changed into another prime (67764343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33882156 + 33882157.

It is an arithmetic number, because the mean of its divisors is an integer number (33882157).

Almost surely, 2^67764313 is an apocalyptic number.

It is an amenable number.

67764313 is a deficient number, since it is larger than the sum of its proper divisors (1).

67764313 is an equidigital number, since it uses as much as digits as its factorization.

67764313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 37.

The square root of 67764313 is about 8231.9082234923. The cubic root of 67764313 is about 407.6933991089.

The spelling of 67764313 in words is "sixty-seven million, seven hundred sixty-four thousand, three hundred thirteen".