20605070 has 8 divisors (see below), whose sum is σ = 37089144. Its totient is φ = 8242024.

The previous prime is 20605069. The next prime is 20605073. The reversal of 20605070 is 7050602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20605073) 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, 1030244 + ... + 1030263.

It is an arithmetic number, because the mean of its divisors is an integer number (4636143).

Almost surely, 2^20605070 is an apocalyptic number.

20605070 is a deficient number, since it is larger than the sum of its proper divisors (16484074).

20605070 is a wasteful number, since it uses less digits than its factorization.

20605070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060514.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20605070 is about 4539.2807800355. The cubic root of 20605070 is about 274.1519660676.

Adding to 20605070 its reverse (7050602), we get a palindrome (27655672).

The spelling of 20605070 in words is "twenty million, six hundred five thousand, seventy".