20676901 has 4 divisors (see below), whose sum is σ = 23630752. Its totient is φ = 17723052.

The previous prime is 20676893. The next prime is 20676919. The reversal of 20676901 is 10967602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20676901 - 2³ = 20676893 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 (20676961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476915 + ... + 1476928.

It is an arithmetic number, because the mean of its divisors is an integer number (5907688).

Almost surely, 2^20676901 is an apocalyptic number.

It is an amenable number.

20676901 is a deficient number, since it is larger than the sum of its proper divisors (2953851).

20676901 is an equidigital number, since it uses as much as digits as its factorization.

20676901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953850.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 20676901 is about 4547.1860529343. The cubic root of 20676901 is about 274.4701688324.

The spelling of 20676901 in words is "twenty million, six hundred seventy-six thousand, nine hundred one".