20070087 has 4 divisors (see below), whose sum is σ = 26760120. Its totient is φ = 13380056.

The previous prime is 20070049. The next prime is 20070101. The reversal of 20070087 is 78007002.

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

It is a cyclic number.

It is not a de Polignac number, because 20070087 - 2⁸ = 20069831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20070887) 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, 3345012 + ... + 3345017.

It is an arithmetic number, because the mean of its divisors is an integer number (6690030).

Almost surely, 2^20070087 is an apocalyptic number.

20070087 is a deficient number, since it is larger than the sum of its proper divisors (6690033).

20070087 is an equidigital number, since it uses as much as digits as its factorization.

20070087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690032.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 20070087 is about 4479.9650668281. The cubic root of 20070087 is about 271.7584676434.

Adding to 20070087 its reverse (78007002), we get a palindrome (98077089).

The spelling of 20070087 in words is "twenty million, seventy thousand, eighty-seven".