620743351 has 2 divisors, whose sum is σ = 620743352. Its totient is φ = 620743350.

The previous prime is 620743327. The next prime is 620743363. The reversal of 620743351 is 153347026.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620743351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620743951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310371675 + 310371676.

It is an arithmetic number, because the mean of its divisors is an integer number (310371676).

Almost surely, 2^620743351 is an apocalyptic number.

620743351 is a deficient number, since it is larger than the sum of its proper divisors (1).

620743351 is an equidigital number, since it uses as much as digits as its factorization.

620743351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 620743351 is about 24914.7215717937. The cubic root of 620743351 is about 853.0425454550.

The spelling of 620743351 in words is "six hundred twenty million, seven hundred forty-three thousand, three hundred fifty-one".