67912069 has 2 divisors, whose sum is σ = 67912070. Its totient is φ = 67912068.

The previous prime is 67912043. The next prime is 67912081. The reversal of 67912069 is 96021976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 3751969 = 8010^2 + 1937^2 .

It is a cyclic number.

It is not a de Polignac number, because 67912069 - 2⁵ = 67912037 is a prime.

It is a super-2 number, since 2×67912069² = 9224098231721522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67915069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33956034 + 33956035.

It is an arithmetic number, because the mean of its divisors is an integer number (33956035).

Almost surely, 2^67912069 is an apocalyptic number.

It is an amenable number.

67912069 is a deficient number, since it is larger than the sum of its proper divisors (1).

67912069 is an equidigital number, since it uses as much as digits as its factorization.

67912069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 67912069 is about 8240.8779265319. The cubic root of 67912069 is about 407.9895009633.

The spelling of 67912069 in words is "sixty-seven million, nine hundred twelve thousand, sixty-nine".