620915088945 has 16 divisors (see below), whose sum is σ = 1036658236032. Its totient is φ = 316756682880.

The previous prime is 620915088931. The next prime is 620915088947. The reversal of 620915088945 is 549880519026.

It is a happy number.

It is not a de Polignac number, because 620915088945 - 2⁹ = 620915088433 is a prime.

It is a super-2 number, since 2×620915088945² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620915088947) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 899876596 + ... + 899877285.

It is an arithmetic number, because the mean of its divisors is an integer number (64791139752).

Almost surely, 2^620915088945 is an apocalyptic number.

It is an amenable number.

620915088945 is a deficient number, since it is larger than the sum of its proper divisors (415743147087).

620915088945 is a wasteful number, since it uses less digits than its factorization.

620915088945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799753912.

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 620915088945 in words is "six hundred twenty billion, nine hundred fifteen million, eighty-eight thousand, nine hundred forty-five".