620055660 has 48 divisors (see below), whose sum is σ = 1984179456. Its totient is φ = 141726912.

The previous prime is 620055659. The next prime is 620055661. The reversal of 620055660 is 66550026.

620055660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (620055659) and next prime (620055661).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (620055661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737742 + ... + 738581.

It is an arithmetic number, because the mean of its divisors is an integer number (41337072).

Almost surely, 2^620055660 is an apocalyptic number.

620055660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620055660 is an abundant number, since it is smaller than the sum of its proper divisors (1364123796).

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

620055660 is a wasteful number, since it uses less digits than its factorization.

620055660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476342 (or 1476340 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 620055660 is about 24900.9168505901. The cubic root of 620055660 is about 852.7274144397.

The spelling of 620055660 in words is "six hundred twenty million, fifty-five thousand, six hundred sixty".