20740463 has 2 divisors, whose sum is σ = 20740464. Its totient is φ = 20740462.

The previous prime is 20740441. The next prime is 20740469. The reversal of 20740463 is 36404702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20740463 - 2⁶ = 20740399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20740469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10370231 + 10370232.

It is an arithmetic number, because the mean of its divisors is an integer number (10370232).

Almost surely, 2^20740463 is an apocalyptic number.

20740463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20740463 is an equidigital number, since it uses as much as digits as its factorization.

20740463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 20740463 is about 4554.1698475134. The cubic root of 20740463 is about 274.7511269056.

The spelling of 20740463 in words is "twenty million, seven hundred forty thousand, four hundred sixty-three".