20070507 has 4 divisors (see below), whose sum is σ = 26760680. Its totient is φ = 13380336.

The previous prime is 20070473. The next prime is 20070509. The reversal of 20070507 is 70507002.

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

It is not a de Polignac number, because 20070507 - 2¹⁴ = 20054123 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 3345082 + ... + 3345087.

It is an arithmetic number, because the mean of its divisors is an integer number (6690170).

Almost surely, 2^20070507 is an apocalyptic number.

20070507 is a deficient number, since it is larger than the sum of its proper divisors (6690173).

20070507 is an equidigital number, since it uses as much as digits as its factorization.

20070507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690172.

The product of its (nonzero) digits is 490, while the sum is 21.

The square root of 20070507 is about 4480.0119419484. The cubic root of 20070507 is about 271.7603632963.

Adding to 20070507 its reverse (70507002), we get a palindrome (90577509).

It can be divided in two parts, 200 and 70507, that added together give a palindrome (70707).

The spelling of 20070507 in words is "twenty million, seventy thousand, five hundred seven".