100648069 has 6 divisors (see below), whose sum is σ = 105214886. Its totient is φ = 96271560.

The previous prime is 100648043. The next prime is 100648081. The reversal of 100648069 is 960846001.

It can be written as a sum of positive squares in only one way, i.e., 72420100 + 28227969 = 8510^2 + 5313^2 .

It is not a de Polignac number, because 100648069 - 2¹⁹ = 100123781 is a prime.

It is a super-2 number, since 2×100648069² = 20260067586857522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100648039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94602 + ... + 95659.

Almost surely, 2^100648069 is an apocalyptic number.

It is an amenable number.

100648069 is a deficient number, since it is larger than the sum of its proper divisors (4566817).

100648069 is an equidigital number, since it uses as much as digits as its factorization.

100648069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190307 (or 190284 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 100648069 is about 10032.3511202509. The cubic root of 100648069 is about 465.1594150300.

The spelling of 100648069 in words is "one hundred million, six hundred forty-eight thousand, sixty-nine".