620402873 has 2 divisors, whose sum is σ = 620402874. Its totient is φ = 620402872.

The previous prime is 620402863. The next prime is 620402911. The reversal of 620402873 is 378204026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331130809 + 289272064 = 18197^2 + 17008^2 .

It is a cyclic number.

It is not a de Polignac number, because 620402873 - 2⁸ = 620402617 is a prime.

It is not a weakly prime, because it can be changed into another prime (620402863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310201436 + 310201437.

It is an arithmetic number, because the mean of its divisors is an integer number (310201437).

Almost surely, 2^620402873 is an apocalyptic number.

It is an amenable number.

620402873 is a deficient number, since it is larger than the sum of its proper divisors (1).

620402873 is an equidigital number, since it uses as much as digits as its factorization.

620402873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 620402873 is about 24907.8877667296. The cubic root of 620402873 is about 852.8865521941.

Adding to 620402873 its reverse (378204026), we get a palindrome (998606899).

The spelling of 620402873 in words is "six hundred twenty million, four hundred two thousand, eight hundred seventy-three".