67897807 has 2 divisors, whose sum is σ = 67897808. Its totient is φ = 67897806.

The previous prime is 67897801. The next prime is 67897859. The reversal of 67897807 is 70879876.

It is a happy number.

It is an a-pointer prime, because the next prime (67897859) can be obtained adding 67897807 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67897807 - 2³ = 67897799 is a prime.

It is a super-2 number, since 2×67897807² = 9220224390818498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67897801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33948903 + 33948904.

It is an arithmetic number, because the mean of its divisors is an integer number (33948904).

Almost surely, 2^67897807 is an apocalyptic number.

67897807 is a deficient number, since it is larger than the sum of its proper divisors (1).

67897807 is an equidigital number, since it uses as much as digits as its factorization.

67897807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 67897807 is about 8240.0125606700. The cubic root of 67897807 is about 407.9609387665.

The spelling of 67897807 in words is "sixty-seven million, eight hundred ninety-seven thousand, eight hundred seven".