106638737 has 2 divisors, whose sum is σ = 106638738. Its totient is φ = 106638736.

The previous prime is 106638731. The next prime is 106638751. The reversal of 106638737 is 737836601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100080016 + 6558721 = 10004^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 106638737 - 2²⁶ = 39529873 is a prime.

It is a super-2 number, since 2×106638737² = 22743640457910338, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 106638694 and 106638703.

It is not a weakly prime, because it can be changed into another prime (106638731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53319368 + 53319369.

It is an arithmetic number, because the mean of its divisors is an integer number (53319369).

Almost surely, 2^106638737 is an apocalyptic number.

It is an amenable number.

106638737 is a deficient number, since it is larger than the sum of its proper divisors (1).

106638737 is an equidigital number, since it uses as much as digits as its factorization.

106638737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 106638737 is about 10326.6033621903. The cubic root of 106638737 is about 474.2110441336.

The spelling of 106638737 in words is "one hundred six million, six hundred thirty-eight thousand, seven hundred thirty-seven".