67454749 has 2 divisors, whose sum is σ = 67454750. Its totient is φ = 67454748.

The previous prime is 67454713. The next prime is 67454771. The reversal of 67454749 is 94745476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53392249 + 14062500 = 7307^2 + 3750^2 .

It is a cyclic number.

It is not a de Polignac number, because 67454749 - 2²³ = 59066141 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67454699 and 67454708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67454789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33727374 + 33727375.

It is an arithmetic number, because the mean of its divisors is an integer number (33727375).

Almost surely, 2^67454749 is an apocalyptic number.

It is an amenable number.

67454749 is a deficient number, since it is larger than the sum of its proper divisors (1).

67454749 is an equidigital number, since it uses as much as digits as its factorization.

67454749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 46.

The square root of 67454749 is about 8213.0840127202. The cubic root of 67454749 is about 407.0716368821.

The spelling of 67454749 in words is "sixty-seven million, four hundred fifty-four thousand, seven hundred forty-nine".