100620 has 72 divisors (see below), whose sum is σ = 336336. Its totient is φ = 24192.

The previous prime is 100613. The next prime is 100621. The reversal of 100620 is 26001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2319 + ... + 2361.

2¹⁰⁰⁶²⁰ is an apocalyptic number.

100620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168168).

100620 is an abundant number, since it is smaller than the sum of its proper divisors (235716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100620 is a wasteful number, since it uses less digits than its factorization.

100620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100620 is about 317.2065573093. The cubic root of 100620 is about 46.5116169380.

100620 divided by its product of nonzero digits (12) gives a triangular number (8385 = T₁₂₉).

Adding to 100620 its reverse (26001), we get a palindrome (126621).

The spelling of 100620 in words is "one hundred thousand, six hundred twenty".