133676609 has 8 divisors (see below), whose sum is σ = 153504480. Its totient is φ = 115128000.

The previous prime is 133676549. The next prime is 133676623. The reversal of 133676609 is 906676331.

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 133676609 - 2¹⁶ = 133611073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133676629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319592 + ... + 320009.

It is an arithmetic number, because the mean of its divisors is an integer number (19188060).

Almost surely, 2^133676609 is an apocalyptic number.

133676609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

133676609 is a deficient number, since it is larger than the sum of its proper divisors (19827871).

133676609 is a wasteful number, since it uses less digits than its factorization.

133676609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639631.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 133676609 is about 11561.8601012121. The cubic root of 133676609 is about 511.3110048496.

The spelling of 133676609 in words is "one hundred thirty-three million, six hundred seventy-six thousand, six hundred nine".