620747 has 8 divisors (see below), whose sum is σ = 655776. Its totient is φ = 586432.

The previous prime is 620743. The next prime is 620759. The reversal of 620747 is 747026.

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

It is a cyclic number.

It is not a de Polignac number, because 620747 - 2² = 620743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3053 + ... + 3249.

It is an arithmetic number, because the mean of its divisors is an integer number (81972).

2⁶²⁰⁷⁴⁷ is an apocalyptic number.

620747 is a deficient number, since it is larger than the sum of its proper divisors (35029).

620747 is a wasteful number, since it uses less digits than its factorization.

620747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 620747 is about 787.8749900841. The cubic root of 620747 is about 85.3044216970.

The spelling of 620747 in words is "six hundred twenty thousand, seven hundred forty-seven".