20477467 has 2 divisors, whose sum is σ = 20477468. Its totient is φ = 20477466.

The previous prime is 20477461. The next prime is 20477489. The reversal of 20477467 is 76477402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20477467 - 2¹⁹ = 19953179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20477461) 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 as a sum of consecutive naturals, namely, 10238733 + 10238734.

It is an arithmetic number, because the mean of its divisors is an integer number (10238734).

Almost surely, 2^20477467 is an apocalyptic number.

20477467 is a deficient number, since it is larger than the sum of its proper divisors (1).

20477467 is an equidigital number, since it uses as much as digits as its factorization.

20477467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 20477467 is about 4525.2035313343. The cubic root of 20477467 is about 273.5848713963.

The spelling of 20477467 in words is "twenty million, four hundred seventy-seven thousand, four hundred sixty-seven".