106240639 has 2 divisors, whose sum is σ = 106240640. Its totient is φ = 106240638.

The previous prime is 106240597. The next prime is 106240649. The reversal of 106240639 is 936042601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 106240639 - 2¹⁷ = 106109567 is a prime.

It is a super-2 number, since 2×106240639² = 22574146750256642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106240639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106240649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53120319 + 53120320.

It is an arithmetic number, because the mean of its divisors is an integer number (53120320).

Almost surely, 2^106240639 is an apocalyptic number.

106240639 is a deficient number, since it is larger than the sum of its proper divisors (1).

106240639 is an equidigital number, since it uses as much as digits as its factorization.

106240639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 106240639 is about 10307.3099788451. The cubic root of 106240639 is about 473.6202085719.

The spelling of 106240639 in words is "one hundred six million, two hundred forty thousand, six hundred thirty-nine".