620682428 has 6 divisors (see below), whose sum is σ = 1086194256. Its totient is φ = 310341212.

The previous prime is 620682421. The next prime is 620682457. The reversal of 620682428 is 824286026.

It is a junction number, because it is equal to n+sod(n) for n = 620682391 and 620682400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620682421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77585300 + ... + 77585307.

It is an arithmetic number, because the mean of its divisors is an integer number (181032376).

Almost surely, 2^620682428 is an apocalyptic number.

It is an amenable number.

620682428 is a deficient number, since it is larger than the sum of its proper divisors (465511828).

620682428 is a wasteful number, since it uses less digits than its factorization.

620682428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155170611 (or 155170609 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 620682428 is about 24913.4989112328. The cubic root of 620682428 is about 853.0146371892.

The spelling of 620682428 in words is "six hundred twenty million, six hundred eighty-two thousand, four hundred twenty-eight".