620483977 has 4 divisors (see below), whose sum is σ = 620566020. Its totient is φ = 620401936.

The previous prime is 620483951. The next prime is 620483993. The reversal of 620483977 is 779384026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212605561 + 407878416 = 14581^2 + 20196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620483977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620487977) 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 3 ways as a sum of consecutive naturals, for example, 28378 + ... + 45235.

It is an arithmetic number, because the mean of its divisors is an integer number (155141505).

Almost surely, 2^620483977 is an apocalyptic number.

It is an amenable number.

620483977 is a deficient number, since it is larger than the sum of its proper divisors (82043).

620483977 is an equidigital number, since it uses as much as digits as its factorization.

620483977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82042.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 620483977 is about 24909.5157921626. The cubic root of 620483977 is about 852.9237159468.

The spelling of 620483977 in words is "six hundred twenty million, four hundred eighty-three thousand, nine hundred seventy-seven".