106638647 has 2 divisors, whose sum is σ = 106638648. Its totient is φ = 106638646.

The previous prime is 106638641. The next prime is 106638731. The reversal of 106638647 is 746836601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106638647 - 2⁸ = 106638391 is a prime.

It is a super-2 number, since 2×106638647² = 22743602067981218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106638641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53319323 + 53319324.

It is an arithmetic number, because the mean of its divisors is an integer number (53319324).

Almost surely, 2^106638647 is an apocalyptic number.

106638647 is a deficient number, since it is larger than the sum of its proper divisors (1).

106638647 is an equidigital number, since it uses as much as digits as its factorization.

106638647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 106638647 is about 10326.5990045126. The cubic root of 106638647 is about 474.2109107267.

The spelling of 106638647 in words is "one hundred six million, six hundred thirty-eight thousand, six hundred forty-seven".