620427521507 has 2 divisors, whose sum is σ = 620427521508. Its totient is φ = 620427521506.

The previous prime is 620427521437. The next prime is 620427521557. The reversal of 620427521507 is 705125724026.

620427521507 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 620427521507 - 2⁸ = 620427521251 is a prime.

It is not a weakly prime, because it can be changed into another prime (620427521557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310213760753 + 310213760754.

It is an arithmetic number, because the mean of its divisors is an integer number (310213760754).

Almost surely, 2^620427521507 is an apocalyptic number.

620427521507 is a deficient number, since it is larger than the sum of its proper divisors (1).

620427521507 is an equidigital number, since it uses as much as digits as its factorization.

620427521507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 620427521507 in words is "six hundred twenty billion, four hundred twenty-seven million, five hundred twenty-one thousand, five hundred seven".