20674867 has 2 divisors, whose sum is σ = 20674868. Its totient is φ = 20674866.

The previous prime is 20674847. The next prime is 20674919. The reversal of 20674867 is 76847602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20674867 - 2¹⁵ = 20642099 is a prime.

It is a super-3 number, since 3×20674867³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20674817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337433 + 10337434.

It is an arithmetic number, because the mean of its divisors is an integer number (10337434).

Almost surely, 2^20674867 is an apocalyptic number.

20674867 is a deficient number, since it is larger than the sum of its proper divisors (1).

20674867 is an equidigital number, since it uses as much as digits as its factorization.

20674867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 20674867 is about 4546.9623926309. The cubic root of 20674867 is about 274.4611686018.

The spelling of 20674867 in words is "twenty million, six hundred seventy-four thousand, eight hundred sixty-seven".