620232451 has 2 divisors, whose sum is σ = 620232452. Its totient is φ = 620232450.

The previous prime is 620232449. The next prime is 620232497. The reversal of 620232451 is 154232026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620232451 - 2¹ = 620232449 is a prime.

Together with 620232449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (620236451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310116225 + 310116226.

It is an arithmetic number, because the mean of its divisors is an integer number (310116226).

Almost surely, 2^620232451 is an apocalyptic number.

620232451 is a deficient number, since it is larger than the sum of its proper divisors (1).

620232451 is an equidigital number, since it uses as much as digits as its factorization.

620232451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 620232451 is about 24904.4664869577. The cubic root of 620232451 is about 852.8084502867.

Adding to 620232451 its reverse (154232026), we get a palindrome (774464477).

The spelling of 620232451 in words is "six hundred twenty million, two hundred thirty-two thousand, four hundred fifty-one".