67609387 has 2 divisors, whose sum is σ = 67609388. Its totient is φ = 67609386.

The previous prime is 67609379. The next prime is 67609403. The reversal of 67609387 is 78390676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67609387 - 2³ = 67609379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67609337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33804693 + 33804694.

It is an arithmetic number, because the mean of its divisors is an integer number (33804694).

Almost surely, 2^67609387 is an apocalyptic number.

67609387 is a deficient number, since it is larger than the sum of its proper divisors (1).

67609387 is an equidigital number, since it uses as much as digits as its factorization.

67609387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 67609387 is about 8222.4927485526. The cubic root of 67609387 is about 407.3824660092.

The spelling of 67609387 in words is "sixty-seven million, six hundred nine thousand, three hundred eighty-seven".