100620261 has 12 divisors (see below), whose sum is σ = 166103392. Its totient is φ = 57497256.

The previous prime is 100620259. The next prime is 100620271. The reversal of 100620261 is 162026001.

It is a happy number.

It is not a de Polignac number, because 100620261 - 2¹ = 100620259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100620211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798511 + ... + 798636.

Almost surely, 2^100620261 is an apocalyptic number.

It is an amenable number.

100620261 is a deficient number, since it is larger than the sum of its proper divisors (65483131).

100620261 is a wasteful number, since it uses less digits than its factorization.

100620261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597160 (or 1597157 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 100620261 is about 10030.9651081040. The cubic root of 100620261 is about 465.1165715372.

Adding to 100620261 its reverse (162026001), we get a palindrome (262646262).

The spelling of 100620261 in words is "one hundred million, six hundred twenty thousand, two hundred sixty-one".