621132135 has 128 divisors (see below), whose sum is σ = 1213470720. Its totient is φ = 268240896.

The previous prime is 621132101. The next prime is 621132137. The reversal of 621132135 is 531231126.

621132135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 621132135 - 2¹⁶ = 621066599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621132137) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3152857 + ... + 3153053.

It is an arithmetic number, because the mean of its divisors is an integer number (9480240).

Almost surely, 2^621132135 is an apocalyptic number.

621132135 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

621132135 is a deficient number, since it is larger than the sum of its proper divisors (592338585).

621132135 is a wasteful number, since it uses less digits than its factorization.

621132135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its digits is 1080, while the sum is 24.

The square root of 621132135 is about 24922.5226451898. The cubic root of 621132135 is about 853.2206008338.

The spelling of 621132135 in words is "six hundred twenty-one million, one hundred thirty-two thousand, one hundred thirty-five".