133391677 has 8 divisors (see below), whose sum is σ = 138411000. Its totient is φ = 128400384.

The previous prime is 133391663. The next prime is 133391681. The reversal of 133391677 is 776193331.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 132963961 = 654^2 + 11531^2 .

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 133391677 - 2¹⁵ = 133358909 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 (133391617) 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, 2949 + ... + 16597.

It is an arithmetic number, because the mean of its divisors is an integer number (17301375).

Almost surely, 2^133391677 is an apocalyptic number.

It is an amenable number.

133391677 is a deficient number, since it is larger than the sum of its proper divisors (5019323).

133391677 is a wasteful number, since it uses less digits than its factorization.

133391677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14015.

The product of its digits is 71442, while the sum is 40.

The square root of 133391677 is about 11549.5314623581. The cubic root of 133391677 is about 510.9474595664.

The spelling of 133391677 in words is "one hundred thirty-three million, three hundred ninety-one thousand, six hundred seventy-seven".