200720623 has 2 divisors, whose sum is σ = 200720624. Its totient is φ = 200720622.

The previous prime is 200720573. The next prime is 200720651. The reversal of 200720623 is 326027002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200720623 - 2⁹ = 200720111 is a prime.

It is a super-3 number, since 3×200720623³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200720594 and 200720603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200723623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100360311 + 100360312.

It is an arithmetic number, because the mean of its divisors is an integer number (100360312).

Almost surely, 2^200720623 is an apocalyptic number.

200720623 is a deficient number, since it is larger than the sum of its proper divisors (1).

200720623 is an equidigital number, since it uses as much as digits as its factorization.

200720623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 200720623 is about 14167.5905855583. The cubic root of 200720623 is about 585.5050772303.

Adding to 200720623 its reverse (326027002), we get a palindrome (526747625).

The spelling of 200720623 in words is "two hundred million, seven hundred twenty thousand, six hundred twenty-three".