20734463 has 2 divisors, whose sum is σ = 20734464. Its totient is φ = 20734462.

The previous prime is 20734451. The next prime is 20734487. The reversal of 20734463 is 36443702.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20734463 - 2²² = 16540159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20734403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10367231 + 10367232.

It is an arithmetic number, because the mean of its divisors is an integer number (10367232).

Almost surely, 2^20734463 is an apocalyptic number.

20734463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20734463 is an equidigital number, since it uses as much as digits as its factorization.

20734463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 20734463 is about 4553.5110629052. The cubic root of 20734463 is about 274.7246301369.

The spelling of 20734463 in words is "twenty million, seven hundred thirty-four thousand, four hundred sixty-three".