620606246420 has 24 divisors (see below), whose sum is σ = 1303393043400. Its totient is φ = 248219655552.

The previous prime is 620606246411. The next prime is 620606246459. The reversal of 620606246420 is 24642606026.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10076545924 + 610529700496 = 100382^2 + 781364^2 .

It is a super-2 number, since 2×620606246420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204055 + ... + 1640414.

It is an arithmetic number, because the mean of its divisors is an integer number (54308043475).

Almost surely, 2^620606246420 is an apocalyptic number.

It is an amenable number.

620606246420 is an abundant number, since it is smaller than the sum of its proper divisors (682786796980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620606246420 is a wasteful number, since it uses less digits than its factorization.

620606246420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855387 (or 2855385 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 620606246420 in words is "six hundred twenty billion, six hundred six million, two hundred forty-six thousand, four hundred twenty".