134869666 has 4 divisors (see below), whose sum is σ = 202304502. Its totient is φ = 67434832.

The previous prime is 134869639. The next prime is 134869667. The reversal of 134869666 is 666968431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78694641 + 56175025 = 8871^2 + 7495^2 .

It is not an unprimeable number, because it can be changed into a prime (134869667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33717415 + ... + 33717418.

Almost surely, 2^134869666 is an apocalyptic number.

134869666 is a deficient number, since it is larger than the sum of its proper divisors (67434836).

134869666 is an equidigital number, since it uses as much as digits as its factorization.

134869666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67434835.

The product of its digits is 1119744, while the sum is 49.

The square root of 134869666 is about 11613.3400019116. The cubic root of 134869666 is about 512.8276434362.

The spelling of 134869666 in words is "one hundred thirty-four million, eight hundred sixty-nine thousand, six hundred sixty-six".