105640798 has 16 divisors (see below), whose sum is σ = 169632000. Its totient is φ = 49191192.

The previous prime is 105640793. The next prime is 105640807. The reversal of 105640798 is 897046501.

It is a super-2 number, since 2×105640798² = 22319956404153608, 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 105640798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105640793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21318 + ... + 25801.

It is an arithmetic number, because the mean of its divisors is an integer number (10602000).

Almost surely, 2^105640798 is an apocalyptic number.

105640798 is a deficient number, since it is larger than the sum of its proper divisors (63991202).

105640798 is a wasteful number, since it uses less digits than its factorization.

105640798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47199.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 105640798 is about 10278.1709462336. The cubic root of 105640798 is about 472.7271630558.

The spelling of 105640798 in words is "one hundred five million, six hundred forty thousand, seven hundred ninety-eight".