133678977 has 8 divisors (see below), whose sum is σ = 178317216. Its totient is φ = 89080032.

The previous prime is 133678969. The next prime is 133678997. The reversal of 133678977 is 779876331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133678977 - 2³ = 133678969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133678957) 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 7 ways as a sum of consecutive naturals, for example, 663 + ... + 16364.

It is an arithmetic number, because the mean of its divisors is an integer number (22289652).

Almost surely, 2^133678977 is an apocalyptic number.

It is an amenable number.

133678977 is a deficient number, since it is larger than the sum of its proper divisors (44638239).

133678977 is a wasteful number, since it uses less digits than its factorization.

133678977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19647.

The product of its digits is 1333584, while the sum is 51.

The square root of 133678977 is about 11561.9625064260. The cubic root of 133678977 is about 511.3140240198.

The spelling of 133678977 in words is "one hundred thirty-three million, six hundred seventy-eight thousand, nine hundred seventy-seven".