133764671 has 2 divisors, whose sum is σ = 133764672. Its totient is φ = 133764670.

The previous prime is 133764667. The next prime is 133764737. The reversal of 133764671 is 176467331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133764671 - 2² = 133764667 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133764641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66882335 + 66882336.

It is an arithmetic number, because the mean of its divisors is an integer number (66882336).

Almost surely, 2^133764671 is an apocalyptic number.

133764671 is a deficient number, since it is larger than the sum of its proper divisors (1).

133764671 is an equidigital number, since it uses as much as digits as its factorization.

133764671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 133764671 is about 11565.6677714691. The cubic root of 133764671 is about 511.4232588088.

The spelling of 133764671 in words is "one hundred thirty-three million, seven hundred sixty-four thousand, six hundred seventy-one".