67620671 has 2 divisors, whose sum is σ = 67620672. Its totient is φ = 67620670.

The previous prime is 67620659. The next prime is 67620673. The reversal of 67620671 is 17602676.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67620671 - 2⁶ = 67620607 is a prime.

Together with 67620673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67620673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33810335 + 33810336.

It is an arithmetic number, because the mean of its divisors is an integer number (33810336).

Almost surely, 2^67620671 is an apocalyptic number.

67620671 is a deficient number, since it is larger than the sum of its proper divisors (1).

67620671 is an equidigital number, since it uses as much as digits as its factorization.

67620671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 67620671 is about 8223.1788865377. The cubic root of 67620671 is about 407.4051287795.

The spelling of 67620671 in words is "sixty-seven million, six hundred twenty thousand, six hundred seventy-one".