67374070681 has 2 divisors, whose sum is σ = 67374070682. Its totient is φ = 67374070680.

The previous prime is 67374070663. The next prime is 67374070703. The reversal of 67374070681 is 18607047376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65899510681 + 1474560000 = 256709^2 + 38400^2 .

It is a cyclic number.

It is not a de Polignac number, because 67374070681 - 2⁵ = 67374070649 is a prime.

It is a super-2 number, since 2×67374070681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67374073681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33687035340 + 33687035341.

It is an arithmetic number, because the mean of its divisors is an integer number (33687035341).

Almost surely, 2^67374070681 is an apocalyptic number.

It is an amenable number.

67374070681 is a deficient number, since it is larger than the sum of its proper divisors (1).

67374070681 is an equidigital number, since it uses as much as digits as its factorization.

67374070681 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 49.

The spelling of 67374070681 in words is "sixty-seven billion, three hundred seventy-four million, seventy thousand, six hundred eighty-one".