67140613 has 2 divisors, whose sum is σ = 67140614. Its totient is φ = 67140612.

The previous prime is 67140571. The next prime is 67140641. The reversal of 67140613 is 31604176.

It is an a-pointer prime, because the next prime (67140641) can be obtained adding 67140613 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38912644 + 28227969 = 6238^2 + 5313^2 .

It is a cyclic number.

It is not a de Polignac number, because 67140613 - 2¹³ = 67132421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67140313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33570306 + 33570307.

It is an arithmetic number, because the mean of its divisors is an integer number (33570307).

Almost surely, 2^67140613 is an apocalyptic number.

It is an amenable number.

67140613 is a deficient number, since it is larger than the sum of its proper divisors (1).

67140613 is an equidigital number, since it uses as much as digits as its factorization.

67140613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 67140613 is about 8193.9375760375. The cubic root of 67140613 is about 406.4387440749.

Adding to 67140613 its reverse (31604176), we get a palindrome (98744789).

It can be divided in two parts, 671406 and 13, that multiplied together give a palindrome (8728278).

The spelling of 67140613 in words is "sixty-seven million, one hundred forty thousand, six hundred thirteen".