67625861 has 2 divisors, whose sum is σ = 67625862. Its totient is φ = 67625860.

The previous prime is 67625839. The next prime is 67625869. The reversal of 67625861 is 16852676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63504961 + 4120900 = 7969^2 + 2030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67625861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67625869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33812930 + 33812931.

It is an arithmetic number, because the mean of its divisors is an integer number (33812931).

Almost surely, 2^67625861 is an apocalyptic number.

It is an amenable number.

67625861 is a deficient number, since it is larger than the sum of its proper divisors (1).

67625861 is an equidigital number, since it uses as much as digits as its factorization.

67625861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 67625861 is about 8223.4944518739. The cubic root of 67625861 is about 407.4155515220.

It can be divided in two parts, 67625 and 861, that added together give a palindrome (68486).

The spelling of 67625861 in words is "sixty-seven million, six hundred twenty-five thousand, eight hundred sixty-one".