67495997 has 2 divisors, whose sum is σ = 67495998. Its totient is φ = 67495996.

The previous prime is 67495991. The next prime is 67496017. The reversal of 67495997 is 79959476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60388441 + 7107556 = 7771^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 67495997 - 2⁸ = 67495741 is a prime.

It is a super-2 number, since 2×67495997² = 9111419222048018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67495991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33747998 + 33747999.

It is an arithmetic number, because the mean of its divisors is an integer number (33747999).

Almost surely, 2^67495997 is an apocalyptic number.

It is an amenable number.

67495997 is a deficient number, since it is larger than the sum of its proper divisors (1).

67495997 is an equidigital number, since it uses as much as digits as its factorization.

67495997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 56.

The square root of 67495997 is about 8215.5947441436. The cubic root of 67495997 is about 407.1545935792.

The spelling of 67495997 in words is "sixty-seven million, four hundred ninety-five thousand, nine hundred ninety-seven".