620774 has 32 divisors (see below), whose sum is σ = 1209600. Its totient is φ = 231840.

The previous prime is 620773. The next prime is 620777. The reversal of 620774 is 477026.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620771) 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 15 ways as a sum of consecutive naturals, for example, 4397 + ... + 4535.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁶²⁰⁷⁷⁴ is an apocalyptic number.

620774 is a deficient number, since it is larger than the sum of its proper divisors (588826).

620774 is a wasteful number, since it uses less digits than its factorization.

620774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

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

The square root of 620774 is about 787.8921245957. The cubic root of 620774 is about 85.3056584790.

The spelling of 620774 in words is "six hundred twenty thousand, seven hundred seventy-four".