133686463 has 4 divisors (see below), whose sum is σ = 134030520. Its totient is φ = 133342408.

The previous prime is 133686461. The next prime is 133686479. The reversal of 133686463 is 364686331.

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 133686463 - 2¹ = 133686461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133686461) 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, 171445 + ... + 172222.

It is an arithmetic number, because the mean of its divisors is an integer number (33507630).

Almost surely, 2^133686463 is an apocalyptic number.

133686463 is a deficient number, since it is larger than the sum of its proper divisors (344057).

133686463 is an equidigital number, since it uses as much as digits as its factorization.

133686463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344056.

The product of its digits is 186624, while the sum is 40.

The square root of 133686463 is about 11562.2862358618. The cubic root of 133686463 is about 511.3235683412.

The spelling of 133686463 in words is "one hundred thirty-three million, six hundred eighty-six thousand, four hundred sixty-three".