133620435 has 80 divisors (see below), whose sum is σ = 264670560. Its totient is φ = 64074240.

The previous prime is 133620413. The next prime is 133620437. The reversal of 133620435 is 534026331.

It is a happy number.

133620435 is a `hidden beast` number, since 1 + 3 + 3 + 620 + 4 + 35 = 666.

It is not a de Polignac number, because 133620435 - 2⁹ = 133619923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 133620399 and 133620408.

It is not an unprimeable number, because it can be changed into a prime (133620437) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 215556 + ... + 216174.

It is an arithmetic number, because the mean of its divisors is an integer number (3308382).

Almost surely, 2^133620435 is an apocalyptic number.

133620435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133620435 is a deficient number, since it is larger than the sum of its proper divisors (131050125).

133620435 is a wasteful number, since it uses less digits than its factorization.

133620435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 133620435 is about 11559.4305655599. The cubic root of 133620435 is about 511.2393732485.

Adding to 133620435 its reverse (534026331), we get a palindrome (667646766).

The spelling of 133620435 in words is "one hundred thirty-three million, six hundred twenty thousand, four hundred thirty-five".