20670001 has 8 divisors (see below), whose sum is σ = 22932000. Its totient is φ = 18471840.

The previous prime is 20669941. The next prime is 20670007. The reversal of 20670001 is 10007602.

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

It is a cyclic number.

It is not a de Polignac number, because 20670001 - 2¹⁷ = 20538929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20670007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15276 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (2866500).

Almost surely, 2^20670001 is an apocalyptic number.

It is an amenable number.

20670001 is a deficient number, since it is larger than the sum of its proper divisors (2261999).

20670001 is a wasteful number, since it uses less digits than its factorization.

20670001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31919.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20670001 is about 4546.4272786442. The cubic root of 20670001 is about 274.4396346812.

Adding to 20670001 its reverse (10007602), we get a palindrome (30677603).

It can be divided in two parts, 206 and 70001, that added together give a palindrome (70207).

The spelling of 20670001 in words is "twenty million, six hundred seventy thousand, one".