620254647 has 12 divisors (see below), whose sum is σ = 908197264. Its totient is φ = 407838240.

The previous prime is 620254633. The next prime is 620254681. The reversal of 620254647 is 746452026.

620254647 is a `hidden beast` number, since 6 + 2 + 0 + 2 + 5 + 4 + 647 = 666.

It is not a de Polignac number, because 620254647 - 2⁴ = 620254631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620254247) 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 11 ways as a sum of consecutive naturals, for example, 471379 + ... + 472692.

Almost surely, 2^620254647 is an apocalyptic number.

620254647 is a deficient number, since it is larger than the sum of its proper divisors (287942617).

620254647 is a wasteful number, since it uses less digits than its factorization.

620254647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944150 (or 944147 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 620254647 is about 24904.9121058477. The cubic root of 620254647 is about 852.8186231988.

The spelling of 620254647 in words is "six hundred twenty million, two hundred fifty-four thousand, six hundred forty-seven".