621480127 has 2 divisors, whose sum is σ = 621480128. Its totient is φ = 621480126.

The previous prime is 621480109. The next prime is 621480131. The reversal of 621480127 is 721084126.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621480127 is a prime.

It is a super-2 number, since 2×621480127² = 772475096511872258, which contains 22 as substring.

It is a Chen prime.

It is equal to p_32386450 and since 621480127 and 32386450 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621480427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310740063 + 310740064.

It is an arithmetic number, because the mean of its divisors is an integer number (310740064).

Almost surely, 2^621480127 is an apocalyptic number.

621480127 is a deficient number, since it is larger than the sum of its proper divisors (1).

621480127 is an equidigital number, since it uses as much as digits as its factorization.

621480127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 621480127 is about 24929.5031438655. The cubic root of 621480127 is about 853.3799112793.

The spelling of 621480127 in words is "six hundred twenty-one million, four hundred eighty thousand, one hundred twenty-seven".