20946007 has 4 divisors (see below), whose sum is σ = 20994160. Its totient is φ = 20897856.

The previous prime is 20945941. The next prime is 20946017. The reversal of 20946007 is 70064902.

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 20946007 - 2¹⁹ = 20421719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20946017) 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, 23418 + ... + 24295.

It is an arithmetic number, because the mean of its divisors is an integer number (5248540).

Almost surely, 2^20946007 is an apocalyptic number.

20946007 is a deficient number, since it is larger than the sum of its proper divisors (48153).

20946007 is an equidigital number, since it uses as much as digits as its factorization.

20946007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48152.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20946007 is about 4576.6807841491. The cubic root of 20946007 is about 275.6557661438.

The spelling of 20946007 in words is "twenty million, nine hundred forty-six thousand, seven".