620958953 has 2 divisors, whose sum is σ = 620958954. Its totient is φ = 620958952.

The previous prime is 620958857. The next prime is 620958959. The reversal of 620958953 is 359859026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515834944 + 105124009 = 22712^2 + 10253^2 .

It is a cyclic number.

It is not a de Polignac number, because 620958953 - 2²² = 616764649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 620958898 and 620958907.

It is not a weakly prime, because it can be changed into another prime (620958959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310479476 + 310479477.

It is an arithmetic number, because the mean of its divisors is an integer number (310479477).

Almost surely, 2^620958953 is an apocalyptic number.

It is an amenable number.

620958953 is a deficient number, since it is larger than the sum of its proper divisors (1).

620958953 is an equidigital number, since it uses as much as digits as its factorization.

620958953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 620958953 is about 24919.0479954592. The cubic root of 620958953 is about 853.1412960843.

The spelling of 620958953 in words is "six hundred twenty million, nine hundred fifty-eight thousand, nine hundred fifty-three".