20712463 has 8 divisors (see below), whose sum is σ = 20942208. Its totient is φ = 20484384.

The previous prime is 20712449. The next prime is 20712469. The reversal of 20712463 is 36421702.

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 20712463 - 2⁵ = 20712431 is a prime.

It is a super-2 number, since 2×20712463² = 858012247052738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20712469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65181 + ... + 65497.

It is an arithmetic number, because the mean of its divisors is an integer number (2617776).

Almost surely, 2^20712463 is an apocalyptic number.

20712463 is a deficient number, since it is larger than the sum of its proper divisors (229745).

20712463 is a wasteful number, since it uses less digits than its factorization.

20712463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20712463 is about 4551.0947034752. The cubic root of 20712463 is about 274.6274315625.

The spelling of 20712463 in words is "twenty million, seven hundred twelve thousand, four hundred sixty-three".