136720533 has 8 divisors (see below), whose sum is σ = 190219968. Its totient is φ = 87184064.

The previous prime is 136720531. The next prime is 136720537. The reversal of 136720533 is 335027631.

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

It is a cyclic number.

It is not a de Polignac number, because 136720533 - 2¹ = 136720531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136720533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136720531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990660 + ... + 990797.

It is an arithmetic number, because the mean of its divisors is an integer number (23777496).

Almost surely, 2^136720533 is an apocalyptic number.

It is an amenable number.

136720533 is a deficient number, since it is larger than the sum of its proper divisors (53499435).

136720533 is a wasteful number, since it uses less digits than its factorization.

136720533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981483.

The product of its (nonzero) digits is 11340, while the sum is 30.

The square root of 136720533 is about 11692.7555777071. The cubic root of 136720533 is about 515.1629019335.

The spelling of 136720533 in words is "one hundred thirty-six million, seven hundred twenty thousand, five hundred thirty-three".