620977096441 has 9 divisors (see below), whose sum is σ = 672430079181. Its totient is φ = 573200171232.

The previous prime is 620977096433. The next prime is 620977096457. The reversal of 620977096441 is 144690779026.

The square root of 620977096441 is 788021.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 384178072041 + 236799024400 = 619821^2 + 486620^2 .

It is not a de Polignac number, because 620977096441 - 2³ = 620977096433 is a prime.

It is a super-2 number, since 2×620977096441² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620977016441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10213965 + ... + 10274581.

Almost surely, 2^620977096441 is an apocalyptic number.

620977096441 is the 788021-st square number.

620977096441 is the 394011-st centered octagonal number.

It is an amenable number.

620977096441 is a deficient number, since it is larger than the sum of its proper divisors (51452982740).

620977096441 is an frugal number, since it uses more digits than its factorization.

620977096441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121260 (or 60630 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 620977096441 in words is "six hundred twenty billion, nine hundred seventy-seven million, ninety-six thousand, four hundred forty-one".