20650623 has 8 divisors (see below), whose sum is σ = 31467648. Its totient is φ = 11800344.

The previous prime is 20650607. The next prime is 20650657. The reversal of 20650623 is 32605602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20650623 - 2⁴ = 20650607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20650593 and 20650602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491661 + ... + 491702.

It is an arithmetic number, because the mean of its divisors is an integer number (3933456).

Almost surely, 2^20650623 is an apocalyptic number.

20650623 is a deficient number, since it is larger than the sum of its proper divisors (10817025).

20650623 is an equidigital number, since it uses as much as digits as its factorization.

20650623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983373.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20650623 is about 4544.2956549943. The cubic root of 20650623 is about 274.3538460384.

The spelling of 20650623 in words is "twenty million, six hundred fifty thousand, six hundred twenty-three".