620641453297 has 2 divisors, whose sum is σ = 620641453298. Its totient is φ = 620641453296.

The previous prime is 620641453259. The next prime is 620641453301. The reversal of 620641453297 is 792354146026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566874973921 + 53766479376 = 752911^2 + 231876^2 .

It is a cyclic number.

It is not a de Polignac number, because 620641453297 - 2⁷ = 620641453169 is a prime.

It is a super-2 number, since 2×620641453297² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620641453297.

It is not a weakly prime, because it can be changed into another prime (620641456297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310320726648 + 310320726649.

It is an arithmetic number, because the mean of its divisors is an integer number (310320726649).

Almost surely, 2^620641453297 is an apocalyptic number.

It is an amenable number.

620641453297 is a deficient number, since it is larger than the sum of its proper divisors (1).

620641453297 is an equidigital number, since it uses as much as digits as its factorization.

620641453297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 49.

It can be divided in two parts, 62064 and 1453297, that added together give a square (1515361 = 1231²).

The spelling of 620641453297 in words is "six hundred twenty billion, six hundred forty-one million, four hundred fifty-three thousand, two hundred ninety-seven".