67255819 has 2 divisors, whose sum is σ = 67255820. Its totient is φ = 67255818.

The previous prime is 67255789. The next prime is 67255829. The reversal of 67255819 is 91855276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67255819 - 2⁷ = 67255691 is a prime.

It is a super-2 number, since 2×67255819² = 9046690378721522, which contains 22 as substring.

It is equal to p_3965965 and since 67255819 and 3965965 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 (67255829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33627909 + 33627910.

It is an arithmetic number, because the mean of its divisors is an integer number (33627910).

Almost surely, 2^67255819 is an apocalyptic number.

67255819 is a deficient number, since it is larger than the sum of its proper divisors (1).

67255819 is an equidigital number, since it uses as much as digits as its factorization.

67255819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 67255819 is about 8200.9645164456. The cubic root of 67255819 is about 406.6710794857.

It can be divided in two parts, 6725 and 5819, that added together give a square (12544 = 112²).

The spelling of 67255819 in words is "sixty-seven million, two hundred fifty-five thousand, eight hundred nineteen".