67720127 has 2 divisors, whose sum is σ = 67720128. Its totient is φ = 67720126.

The previous prime is 67720087. The next prime is 67720139. The reversal of 67720127 is 72102776.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67720127 - 2¹⁸ = 67457983 is a prime.

It is a super-2 number, since 2×67720127² = 9172031201792258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67720093 and 67720102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67720927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33860063 + 33860064.

It is an arithmetic number, because the mean of its divisors is an integer number (33860064).

Almost surely, 2^67720127 is an apocalyptic number.

67720127 is a deficient number, since it is larger than the sum of its proper divisors (1).

67720127 is an equidigital number, since it uses as much as digits as its factorization.

67720127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 67720127 is about 8229.2239609820. The cubic root of 67720127 is about 407.6047671206.

The spelling of 67720127 in words is "sixty-seven million, seven hundred twenty thousand, one hundred twenty-seven".