62620558081 has 9 divisors (see below), whose sum is σ = 64861864041. Its totient is φ = 60454221744.

The previous prime is 62620558051. The next prime is 62620558087. The reversal of 62620558081 is 18085502626.

The square root of 62620558081 is 250241.

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 5805068481 + 56815489600 = 76191^2 + 238360^2 .

It is not a de Polignac number, because 62620558081 - 2¹³ = 62620549889 is a prime.

It is a super-2 number, since 2×62620558081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (62620558087) 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 8 ways as a sum of consecutive naturals, for example, 7252675 + ... + 7261303.

Almost surely, 2^62620558081 is an apocalyptic number.

62620558081 is the 250241-st square number.

62620558081 is the 125121-st centered octagonal number.

It is an amenable number.

62620558081 is a deficient number, since it is larger than the sum of its proper divisors (2241305960).

62620558081 is an frugal number, since it uses more digits than its factorization.

62620558081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17316 (or 8658 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 62620558081 in words is "sixty-two billion, six hundred twenty million, five hundred fifty-eight thousand, eighty-one".