575721623 has 2 divisors, whose sum is σ = 575721624. Its totient is φ = 575721622.

The previous prime is 575721589. The next prime is 575721637. The reversal of 575721623 is 326127575.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 575721623 - 2¹⁰ = 575720599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (575721673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287860811 + 287860812.

It is an arithmetic number, because the mean of its divisors is an integer number (287860812).

Almost surely, 2^575721623 is an apocalyptic number.

575721623 is a deficient number, since it is larger than the sum of its proper divisors (1).

575721623 is an equidigital number, since it uses as much as digits as its factorization.

575721623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 38.

The square root of 575721623 is about 23994.1997782797. The cubic root of 575721623 is about 831.8994688498.

It can be divided in two parts, 57572 and 1623, that added together give a palindrome (59195).

The spelling of 575721623 in words is "five hundred seventy-five million, seven hundred twenty-one thousand, six hundred twenty-three".