20676401 has 8 divisors (see below), whose sum is σ = 21178464. Its totient is φ = 20180160.

The previous prime is 20676371. The next prime is 20676431. The reversal of 20676401 is 10467602.

20676401 = T₉₈ + T₉₉ + ... + T₄₉₉.

It is an interprime number because it is at equal distance from previous prime (20676371) and next prime (20676431).

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 20676401 - 2¹⁸ = 20414257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20676431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6206 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (2647308).

Almost surely, 2^20676401 is an apocalyptic number.

It is an amenable number.

20676401 is a deficient number, since it is larger than the sum of its proper divisors (502063).

20676401 is a wasteful number, since it uses less digits than its factorization.

20676401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20676401 is about 4547.1310735452. The cubic root of 20676401 is about 274.4679564411.

The spelling of 20676401 in words is "twenty million, six hundred seventy-six thousand, four hundred one".