67323649 has 2 divisors, whose sum is σ = 67323650. Its totient is φ = 67323648.

The previous prime is 67323637. The next prime is 67323653. The reversal of 67323649 is 94632376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34433424 + 32890225 = 5868^2 + 5735^2 .

It is a cyclic number.

It is not a de Polignac number, because 67323649 - 2⁷ = 67323521 is a prime.

It is not a weakly prime, because it can be changed into another prime (67323679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33661824 + 33661825.

It is an arithmetic number, because the mean of its divisors is an integer number (33661825).

Almost surely, 2^67323649 is an apocalyptic number.

It is an amenable number.

67323649 is a deficient number, since it is larger than the sum of its proper divisors (1).

67323649 is an equidigital number, since it uses as much as digits as its factorization.

67323649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 40.

The square root of 67323649 is about 8205.0989634495. The cubic root of 67323649 is about 406.8077478642.

The spelling of 67323649 in words is "sixty-seven million, three hundred twenty-three thousand, six hundred forty-nine".