620505331452 has 72 divisors (see below), whose sum is σ = 1580766279456. Its totient is φ = 205219090944.

The previous prime is 620505331447. The next prime is 620505331469. The reversal of 620505331452 is 254133505026.

620505331452 is a `hidden beast` number, since 6 + 2 + 0 + 505 + 3 + 3 + 145 + 2 = 666.

It is a super-3 number, since 3×620505331452³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9797913 + ... + 9861039.

Almost surely, 2^620505331452 is an apocalyptic number.

It is an amenable number.

620505331452 is an abundant number, since it is smaller than the sum of its proper divisors (960260948004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620505331452 is a wasteful number, since it uses less digits than its factorization.

620505331452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65267 (or 65262 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 620505331452 its reverse (254133505026), we get a palindrome (874638836478).

The spelling of 620505331452 in words is "six hundred twenty billion, five hundred five million, three hundred thirty-one thousand, four hundred fifty-two".