67560641 has 2 divisors, whose sum is σ = 67560642. Its totient is φ = 67560640.

The previous prime is 67560629. The next prime is 67560643. The reversal of 67560641 is 14606576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 255025 = 8204^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 67560641 - 2²² = 63366337 is a prime.

Together with 67560643, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3982940 and since 67560641 and 3982940 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (67560643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33780320 + 33780321.

It is an arithmetic number, because the mean of its divisors is an integer number (33780321).

Almost surely, 2^67560641 is an apocalyptic number.

It is an amenable number.

67560641 is a deficient number, since it is larger than the sum of its proper divisors (1).

67560641 is an equidigital number, since it uses as much as digits as its factorization.

67560641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 67560641 is about 8219.5280278128. The cubic root of 67560641 is about 407.2845356228.

It can be divided in two parts, 675 and 60641, that added together give a palindrome (61316).

The spelling of 67560641 in words is "sixty-seven million, five hundred sixty thousand, six hundred forty-one".