620431927 has 2 divisors, whose sum is σ = 620431928. Its totient is φ = 620431926.

The previous prime is 620431919. The next prime is 620431943. The reversal of 620431927 is 729134026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620431927 - 2³ = 620431919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620431892 and 620431901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620431027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310215963 + 310215964.

It is an arithmetic number, because the mean of its divisors is an integer number (310215964).

Almost surely, 2^620431927 is an apocalyptic number.

620431927 is a deficient number, since it is larger than the sum of its proper divisors (1).

620431927 is an equidigital number, since it uses as much as digits as its factorization.

620431927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 620431927 is about 24908.4709888022. The cubic root of 620431927 is about 852.8998657898.

The spelling of 620431927 in words is "six hundred twenty million, four hundred thirty-one thousand, nine hundred twenty-seven".