620387461 has 2 divisors, whose sum is σ = 620387462. Its totient is φ = 620387460.

The previous prime is 620387447. The next prime is 620387479. The reversal of 620387461 is 164783026.

620387461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599319361 + 21068100 = 24481^2 + 4590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620387461 is a prime.

It is a super-3 number, since 3×620387461³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620387461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620387491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310193730 + 310193731.

It is an arithmetic number, because the mean of its divisors is an integer number (310193731).

Almost surely, 2^620387461 is an apocalyptic number.

It is an amenable number.

620387461 is a deficient number, since it is larger than the sum of its proper divisors (1).

620387461 is an equidigital number, since it uses as much as digits as its factorization.

620387461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 620387461 is about 24907.5783849013. The cubic root of 620387461 is about 852.8794896884.

The spelling of 620387461 in words is "six hundred twenty million, three hundred eighty-seven thousand, four hundred sixty-one".