133487716 has 6 divisors (see below), whose sum is σ = 233603510. Its totient is φ = 66743856.

The previous prime is 133487713. The next prime is 133487773. The reversal of 133487716 is 617784331.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 47554816 = 9270^2 + 6896^2 .

It is not an unprimeable number, because it can be changed into a prime (133487713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16685961 + ... + 16685968.

Almost surely, 2^133487716 is an apocalyptic number.

It is an amenable number.

133487716 is a deficient number, since it is larger than the sum of its proper divisors (100115794).

133487716 is a wasteful number, since it uses less digits than its factorization.

133487716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33371933 (or 33371931 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 133487716 is about 11553.6884153936. The cubic root of 133487716 is about 511.0700536998.

The spelling of 133487716 in words is "one hundred thirty-three million, four hundred eighty-seven thousand, seven hundred sixteen".