106640437 has 2 divisors, whose sum is σ = 106640438. Its totient is φ = 106640436.

The previous prime is 106640431. The next prime is 106640447. The reversal of 106640437 is 734046601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106626276 + 14161 = 10326^2 + 119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106640437 is a prime.

It is a super-2 number, since 2×106640437² = 22744365607101938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106640399 and 106640408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106640431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53320218 + 53320219.

It is an arithmetic number, because the mean of its divisors is an integer number (53320219).

Almost surely, 2^106640437 is an apocalyptic number.

It is an amenable number.

106640437 is a deficient number, since it is larger than the sum of its proper divisors (1).

106640437 is an equidigital number, since it uses as much as digits as its factorization.

106640437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 106640437 is about 10326.6856735353. The cubic root of 106640437 is about 474.2135640261.

The spelling of 106640437 in words is "one hundred six million, six hundred forty thousand, four hundred thirty-seven".