133539670 has 32 divisors (see below), whose sum is σ = 263256480. Its totient is φ = 48368640.

The previous prime is 133539649. The next prime is 133539677. The reversal of 133539670 is 76935331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133539677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27334 + ... + 31846.

It is an arithmetic number, because the mean of its divisors is an integer number (8226765).

Almost surely, 2^133539670 is an apocalyptic number.

133539670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133539670 is a deficient number, since it is larger than the sum of its proper divisors (129716810).

133539670 is a wasteful number, since it uses less digits than its factorization.

133539670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800.

The product of its (nonzero) digits is 51030, while the sum is 37.

The square root of 133539670 is about 11555.9365695732. The cubic root of 133539670 is about 511.1363486628.

The spelling of 133539670 in words is "one hundred thirty-three million, five hundred thirty-nine thousand, six hundred seventy".