620172647484476 has 24 divisors (see below), whose sum is σ = 1090462060429056. Its totient is φ = 308612102767920.

The previous prime is 620172647484437. The next prime is 620172647484479. The reversal of 620172647484476 is 674484746271026.

It is a happy number.

It is a super-2 number, since 2×620172647484476² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620172647484479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51293015 + ... + 62219921.

It is an arithmetic number, because the mean of its divisors is an integer number (45435919184544).

Almost surely, 2^{620172647484476} is an apocalyptic number.

It is an amenable number.

620172647484476 is a deficient number, since it is larger than the sum of its proper divisors (470289412944580).

620172647484476 is a wasteful number, since it uses less digits than its factorization.

620172647484476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10994369 (or 10994367 counting only the distinct ones).

The product of its (nonzero) digits is 606928896, while the sum is 68.

The spelling of 620172647484476 in words is "six hundred twenty trillion, one hundred seventy-two billion, six hundred forty-seven million, four hundred eighty-four thousand, four hundred seventy-six".