105640078 has 8 divisors (see below), whose sum is σ = 162145368. Its totient is φ = 51591624.

The previous prime is 105640043. The next prime is 105640109. The reversal of 105640078 is 870046501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105640078² = 22319652159692168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614101 + ... + 614272.

It is an arithmetic number, because the mean of its divisors is an integer number (20268171).

Almost surely, 2^105640078 is an apocalyptic number.

105640078 is a deficient number, since it is larger than the sum of its proper divisors (56505290).

105640078 is a wasteful number, since it uses less digits than its factorization.

105640078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228418.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 105640078 is about 10278.1359204867. The cubic root of 105640078 is about 472.7260890884.

Adding to 105640078 its reverse (870046501), we get a palindrome (975686579).

The spelling of 105640078 in words is "one hundred five million, six hundred forty thousand, seventy-eight".