106650421 has 2 divisors, whose sum is σ = 106650422. Its totient is φ = 106650420.

The previous prime is 106650413. The next prime is 106650437. The reversal of 106650421 is 124056601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78676900 + 27973521 = 8870^2 + 5289^2 .

It is a cyclic number.

It is not a de Polignac number, because 106650421 - 2³ = 106650413 is a prime.

It is a super-2 number, since 2×106650421² = 22748624598954482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106650451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53325210 + 53325211.

It is an arithmetic number, because the mean of its divisors is an integer number (53325211).

Almost surely, 2^106650421 is an apocalyptic number.

It is an amenable number.

106650421 is a deficient number, since it is larger than the sum of its proper divisors (1).

106650421 is an equidigital number, since it uses as much as digits as its factorization.

106650421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 106650421 is about 10327.1690699823. The cubic root of 106650421 is about 474.2283626667.

The spelling of 106650421 in words is "one hundred six million, six hundred fifty thousand, four hundred twenty-one".