100638697 has 2 divisors, whose sum is σ = 100638698. Its totient is φ = 100638696.

The previous prime is 100638683. The next prime is 100638721. The reversal of 100638697 is 796836001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99680256 + 958441 = 9984^2 + 979^2 .

It is a cyclic number.

It is not a de Polignac number, because 100638697 - 2¹¹ = 100636649 is a prime.

It is not a weakly prime, because it can be changed into another prime (100638677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50319348 + 50319349.

It is an arithmetic number, because the mean of its divisors is an integer number (50319349).

Almost surely, 2^100638697 is an apocalyptic number.

It is an amenable number.

100638697 is a deficient number, since it is larger than the sum of its proper divisors (1).

100638697 is an equidigital number, since it uses as much as digits as its factorization.

100638697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 100638697 is about 10031.8840204620. The cubic root of 100638697 is about 465.1449765700.

The spelling of 100638697 in words is "one hundred million, six hundred thirty-eight thousand, six hundred ninety-seven".