20463653 has 4 divisors (see below), whose sum is σ = 23387040. Its totient is φ = 17540268.

The previous prime is 20463617. The next prime is 20463661. The reversal of 20463653 is 35636402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20463653 - 2¹⁶ = 20398117 is a prime.

It is a super-2 number, since 2×20463653² = 837522188208818, 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 (20463673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461683 + ... + 1461696.

It is an arithmetic number, because the mean of its divisors is an integer number (5846760).

Almost surely, 2^20463653 is an apocalyptic number.

It is an amenable number.

20463653 is a deficient number, since it is larger than the sum of its proper divisors (2923387).

20463653 is an equidigital number, since it uses as much as digits as its factorization.

20463653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923386.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 20463653 is about 4523.6769336459. The cubic root of 20463653 is about 273.5233378813.

The spelling of 20463653 in words is "twenty million, four hundred sixty-three thousand, six hundred fifty-three".