620072573 has 2 divisors, whose sum is σ = 620072574. Its totient is φ = 620072572.

The previous prime is 620072539. The next prime is 620072587. The reversal of 620072573 is 375270026.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320159449 + 299913124 = 17893^2 + 17318^2 .

It is a cyclic number.

It is not a de Polignac number, because 620072573 - 2⁸ = 620072317 is a prime.

It is equal to p_32316971 and since 620072573 and 32316971 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620072273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310036286 + 310036287.

It is an arithmetic number, because the mean of its divisors is an integer number (310036287).

Almost surely, 2^620072573 is an apocalyptic number.

It is an amenable number.

620072573 is a deficient number, since it is larger than the sum of its proper divisors (1).

620072573 is an equidigital number, since it uses as much as digits as its factorization.

620072573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 620072573 is about 24901.2564542434. The cubic root of 620072573 is about 852.7351675327.

The spelling of 620072573 in words is "six hundred twenty million, seventy-two thousand, five hundred seventy-three".