67240403 has 2 divisors, whose sum is σ = 67240404. Its totient is φ = 67240402.

The previous prime is 67240391. The next prime is 67240441. The reversal of 67240403 is 30404276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67240403 - 2¹⁶ = 67174867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (67240603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33620201 + 33620202.

It is an arithmetic number, because the mean of its divisors is an integer number (33620202).

Almost surely, 2^67240403 is an apocalyptic number.

67240403 is a deficient number, since it is larger than the sum of its proper divisors (1).

67240403 is an equidigital number, since it uses as much as digits as its factorization.

67240403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 67240403 is about 8200.0245731339. The cubic root of 67240403 is about 406.6400054933.

Adding to 67240403 its reverse (30404276), we get a palindrome (97644679).

The spelling of 67240403 in words is "sixty-seven million, two hundred forty thousand, four hundred three".