64140106 has 4 divisors (see below), whose sum is σ = 96210162. Its totient is φ = 32070052.

The previous prime is 64140103. The next prime is 64140107. The reversal of 64140106 is 60104146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32319225 + 31820881 = 5685^2 + 5641^2 .

It is a super-2 number, since 2×64140106² = 8227906395382472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (64140103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16035025 + ... + 16035028.

Almost surely, 2^64140106 is an apocalyptic number.

64140106 is a deficient number, since it is larger than the sum of its proper divisors (32070056).

64140106 is a wasteful number, since it uses less digits than its factorization.

64140106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32070055.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 64140106 is about 8008.7518378334. The cubic root of 64140106 is about 400.2916747629.

It can be divided in two parts, 64140 and 106, that added together give a palindrome (64246).

The spelling of 64140106 in words is "sixty-four million, one hundred forty thousand, one hundred six".