620854257 has 8 divisors (see below), whose sum is σ = 828167776. Its totient is φ = 413721792.

The previous prime is 620854237. The next prime is 620854259. The reversal of 620854257 is 752458026.

620854257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 620854257 - 2⁸ = 620854001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620854259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37048 + ... + 51129.

It is an arithmetic number, because the mean of its divisors is an integer number (103520972).

Almost surely, 2^620854257 is an apocalyptic number.

It is an amenable number.

620854257 is a deficient number, since it is larger than the sum of its proper divisors (207313519).

620854257 is a wasteful number, since it uses less digits than its factorization.

620854257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90527.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 620854257 is about 24916.9471845971. The cubic root of 620854257 is about 853.0933457858.

The spelling of 620854257 in words is "six hundred twenty million, eight hundred fifty-four thousand, two hundred fifty-seven".