100997648 has 20 divisors (see below), whose sum is σ = 199376748. Its totient is φ = 49545600.

The previous prime is 100997647. The next prime is 100997653. The reversal of 100997648 is 846799001.

It can be written as a sum of positive squares in 2 ways, for example, as 71098624 + 29899024 = 8432^2 + 5468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100997599 and 100997608.

It is not an unprimeable number, because it can be changed into a prime (100997647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58703 + ... + 60398.

Almost surely, 2^100997648 is an apocalyptic number.

It is an amenable number.

100997648 is a deficient number, since it is larger than the sum of its proper divisors (98379100).

100997648 is a wasteful number, since it uses less digits than its factorization.

100997648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119162 (or 119156 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 100997648 is about 10049.7586040661. The cubic root of 100997648 is about 465.6973358063.

The spelling of 100997648 in words is "one hundred million, nine hundred ninety-seven thousand, six hundred forty-eight".