20070505 has 16 divisors (see below), whose sum is σ = 29643264. Its totient is φ = 12703680.

The previous prime is 20070473. The next prime is 20070509. The reversal of 20070505 is 50507002.

It is a happy number.

It is not a de Polignac number, because 20070505 - 2⁵ = 20070473 is a prime.

It is a super-3 number, since 3×20070505³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20070509) 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, 21601 + ... + 22510.

It is an arithmetic number, because the mean of its divisors is an integer number (1852704).

Almost surely, 2^20070505 is an apocalyptic number.

It is an amenable number.

20070505 is a deficient number, since it is larger than the sum of its proper divisors (9572759).

20070505 is a wasteful number, since it uses less digits than its factorization.

20070505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44136.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 20070505 is about 4480.0117187347. The cubic root of 20070505 is about 271.7603542695.

Adding to 20070505 its reverse (50507002), we get a palindrome (70577507).

The spelling of 20070505 in words is "twenty million, seventy thousand, five hundred five".