620322451 has 8 divisors (see below), whose sum is σ = 709863264. Its totient is φ = 531012480.

The previous prime is 620322419. The next prime is 620322491. The reversal of 620322451 is 154223026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620322451 - 2⁵ = 620322419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620322491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51910 + ... + 62731.

It is an arithmetic number, because the mean of its divisors is an integer number (88732908).

Almost surely, 2^620322451 is an apocalyptic number.

620322451 is a deficient number, since it is larger than the sum of its proper divisors (89540813).

620322451 is a wasteful number, since it uses less digits than its factorization.

620322451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115421.

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

The square root of 620322451 is about 24906.2733262124. The cubic root of 620322451 is about 852.8496977514.

Adding to 620322451 its reverse (154223026), we get a palindrome (774545477).

The spelling of 620322451 in words is "six hundred twenty million, three hundred twenty-two thousand, four hundred fifty-one".