620669052 has 36 divisors (see below), whose sum is σ = 1605403800. Its totient is φ = 202077792.

The previous prime is 620669051. The next prime is 620669059. The reversal of 620669052 is 250966026.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×620669052² = 770460144221157408, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 620668998 and 620669016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620669051) 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 11 ways as a sum of consecutive naturals, for example, 198927 + ... + 202022.

It is an arithmetic number, because the mean of its divisors is an integer number (44594550).

Almost surely, 2^620669052 is an apocalyptic number.

It is an amenable number.

620669052 is an abundant number, since it is smaller than the sum of its proper divisors (984734748).

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

620669052 is a wasteful number, since it uses less digits than its factorization.

620669052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401002 (or 400997 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 620669052 is about 24913.2304609418. The cubic root of 620669052 is about 853.0085095221.

The spelling of 620669052 in words is "six hundred twenty million, six hundred sixty-nine thousand, fifty-two".