106726639 has 2 divisors, whose sum is σ = 106726640. Its totient is φ = 106726638.

The previous prime is 106726621. The next prime is 106726661. The reversal of 106726639 is 936627601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106726639 - 2²¹ = 104629487 is a prime.

It is a super-2 number, since 2×106726639² = 22781150944472642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106726679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53363319 + 53363320.

It is an arithmetic number, because the mean of its divisors is an integer number (53363320).

Almost surely, 2^106726639 is an apocalyptic number.

106726639 is a deficient number, since it is larger than the sum of its proper divisors (1).

106726639 is an equidigital number, since it uses as much as digits as its factorization.

106726639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 106726639 is about 10330.8585800020. The cubic root of 106726639 is about 474.3413052758.

The spelling of 106726639 in words is "one hundred six million, seven hundred twenty-six thousand, six hundred thirty-nine".