620655576 has 32 divisors (see below), whose sum is σ = 1559690160. Its totient is φ = 205811712.

The previous prime is 620655569. The next prime is 620655587. The reversal of 620655576 is 675556026.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62365 + ... + 71628.

Almost surely, 2^620655576 is an apocalyptic number.

It is an amenable number.

620655576 is an abundant number, since it is smaller than the sum of its proper divisors (939034584).

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

620655576 is a wasteful number, since it uses less digits than its factorization.

620655576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134195 (or 134191 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 620655576 is about 24912.9600007707. The cubic root of 620655576 is about 853.0023359552.

The spelling of 620655576 in words is "six hundred twenty million, six hundred fifty-five thousand, five hundred seventy-six".