133764005 has 8 divisors (see below), whose sum is σ = 161595000. Its totient is φ = 106292416.

The previous prime is 133763999. The next prime is 133764023. The reversal of 133764005 is 500467331.

It can be written as a sum of positive squares in 4 ways, for example, as 7628644 + 126135361 = 2762^2 + 11231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133764005 - 2¹⁸ = 133501861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89030 + ... + 90519.

It is an arithmetic number, because the mean of its divisors is an integer number (20199375).

Almost surely, 2^133764005 is an apocalyptic number.

It is an amenable number.

133764005 is a deficient number, since it is larger than the sum of its proper divisors (27830995).

133764005 is a wasteful number, since it uses less digits than its factorization.

133764005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179703.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 133764005 is about 11565.6389793215. The cubic root of 133764005 is about 511.4224100335.

The spelling of 133764005 in words is "one hundred thirty-three million, seven hundred sixty-four thousand, five".