620521152706 has 24 divisors (see below), whose sum is σ = 1166034256380. Its totient is φ = 245480895072.

The previous prime is 620521152679. The next prime is 620521152767. The reversal of 620521152706 is 607251125026.

It can be written as a sum of positive squares in 2 ways, for example, as 493386832225 + 127134320481 = 702415^2 + 356559^2 .

It is a super-2 number, since 2×620521152706² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243531361 + ... + 243533908.

Almost surely, 2^620521152706 is an apocalyptic number.

620521152706 is a deficient number, since it is larger than the sum of its proper divisors (545513103674).

620521152706 is a wasteful number, since it uses less digits than its factorization.

620521152706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487065298 (or 487065291 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 620521152706 in words is "six hundred twenty billion, five hundred twenty-one million, one hundred fifty-two thousand, seven hundred six".