133477643 has 4 divisors (see below), whose sum is σ = 143745168. Its totient is φ = 123210120.

The previous prime is 133477639. The next prime is 133477651. The reversal of 133477643 is 346774331.

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 133477643 - 2² = 133477639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133477597 and 133477606.

It is not an unprimeable number, because it can be changed into a prime (133477543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5133743 + ... + 5133768.

It is an arithmetic number, because the mean of its divisors is an integer number (35936292).

Almost surely, 2^133477643 is an apocalyptic number.

133477643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133477643 is a deficient number, since it is larger than the sum of its proper divisors (10267525).

133477643 is a wasteful number, since it uses less digits than its factorization.

133477643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10267524.

The product of its digits is 127008, while the sum is 38.

The square root of 133477643 is about 11553.2524857721. The cubic root of 133477643 is about 511.0571982394.

The spelling of 133477643 in words is "one hundred thirty-three million, four hundred seventy-seven thousand, six hundred forty-three".