65541667 has 2 divisors, whose sum is σ = 65541668. Its totient is φ = 65541666.

The previous prime is 65541661. The next prime is 65541709. The reversal of 65541667 is 76614556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65541667 is a prime.

It is a super-2 number, since 2×65541667² = 8591420226277778, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3870679 and since 65541667 and 3870679 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (65541661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32770833 + 32770834.

It is an arithmetic number, because the mean of its divisors is an integer number (32770834).

Almost surely, 2^65541667 is an apocalyptic number.

65541667 is a deficient number, since it is larger than the sum of its proper divisors (1).

65541667 is an equidigital number, since it uses as much as digits as its factorization.

65541667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 65541667 is about 8095.7808147207. The cubic root of 65541667 is about 403.1863566805.

The spelling of 65541667 in words is "sixty-five million, five hundred forty-one thousand, six hundred sixty-seven".