623524073 has 2 divisors, whose sum is σ = 623524074. Its totient is φ = 623524072.

The previous prime is 623524009. The next prime is 623524091. The reversal of 623524073 is 370425326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460016704 + 163507369 = 21448^2 + 12787^2 .

It is a cyclic number.

It is not a de Polignac number, because 623524073 - 2⁶ = 623524009 is a prime.

It is a super-2 number, since 2×623524073² = 777564539221018658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (623524373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311762036 + 311762037.

It is an arithmetic number, because the mean of its divisors is an integer number (311762037).

Almost surely, 2^623524073 is an apocalyptic number.

It is an amenable number.

623524073 is a deficient number, since it is larger than the sum of its proper divisors (1).

623524073 is an equidigital number, since it uses as much as digits as its factorization.

623524073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 623524073 is about 24970.4640125089. The cubic root of 623524073 is about 854.3144296273.

Adding to 623524073 its reverse (370425326), we get a palindrome (993949399).

The spelling of 623524073 in words is "six hundred twenty-three million, five hundred twenty-four thousand, seventy-three".