620464651 has 2 divisors, whose sum is σ = 620464652. Its totient is φ = 620464650.

The previous prime is 620464613. The next prime is 620464661. The reversal of 620464651 is 156464026.

620464651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620464651 - 2¹⁷ = 620333579 is a prime.

It is not a weakly prime, because it can be changed into another prime (620464661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310232325 + 310232326.

It is an arithmetic number, because the mean of its divisors is an integer number (310232326).

Almost surely, 2^620464651 is an apocalyptic number.

620464651 is a deficient number, since it is larger than the sum of its proper divisors (1).

620464651 is an equidigital number, since it uses as much as digits as its factorization.

620464651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 620464651 is about 24909.1278651020. The cubic root of 620464651 is about 852.9148606148.

The spelling of 620464651 in words is "six hundred twenty million, four hundred sixty-four thousand, six hundred fifty-one".