20070105 has 16 divisors (see below), whose sum is σ = 35031744. Its totient is φ = 9730880.

The previous prime is 20070103. The next prime is 20070107. The reversal of 20070105 is 50107002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20070103) and next prime (20070107).

It is not a de Polignac number, because 20070105 - 2¹ = 20070103 is a prime.

It is a super-2 number, since 2×20070105² = 805618229422050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (20070101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60654 + ... + 60983.

It is an arithmetic number, because the mean of its divisors is an integer number (2189484).

Almost surely, 2^20070105 is an apocalyptic number.

It is an amenable number.

20070105 is a deficient number, since it is larger than the sum of its proper divisors (14961639).

20070105 is a wasteful number, since it uses less digits than its factorization.

20070105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121656.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 20070105 is about 4479.9670757719. The cubic root of 20070105 is about 271.7585488862.

Adding to 20070105 its reverse (50107002), we get a palindrome (70177107).

The spelling of 20070105 in words is "twenty million, seventy thousand, one hundred five".