107198639 has 2 divisors, whose sum is σ = 107198640. Its totient is φ = 107198638.

The previous prime is 107198621. The next prime is 107198647. The reversal of 107198639 is 936891701.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 107198639 - 2¹² = 107194543 is a prime.

It is a super-2 number, since 2×107198639² = 22983096406904642, 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 107198639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107198659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53599319 + 53599320.

It is an arithmetic number, because the mean of its divisors is an integer number (53599320).

Almost surely, 2^107198639 is an apocalyptic number.

107198639 is a deficient number, since it is larger than the sum of its proper divisors (1).

107198639 is an equidigital number, since it uses as much as digits as its factorization.

107198639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 107198639 is about 10353.6775592057. The cubic root of 107198639 is about 475.0395372445.

The spelling of 107198639 in words is "one hundred seven million, one hundred ninety-eight thousand, six hundred thirty-nine".