133276643 has 4 divisors (see below), whose sum is σ = 135461568. Its totient is φ = 131091720.

The previous prime is 133276639. The next prime is 133276667. The reversal of 133276643 is 346672331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133276643 - 2² = 133276639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133276603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092371 + ... + 1092492.

It is an arithmetic number, because the mean of its divisors is an integer number (33865392).

Almost surely, 2^133276643 is an apocalyptic number.

133276643 is a deficient number, since it is larger than the sum of its proper divisors (2184925).

133276643 is an equidigital number, since it uses as much as digits as its factorization.

133276643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184924.

The product of its digits is 54432, while the sum is 35.

The square root of 133276643 is about 11544.5503593687. The cubic root of 133276643 is about 510.8005407698.

The spelling of 133276643 in words is "one hundred thirty-three million, two hundred seventy-six thousand, six hundred forty-three".