620758 has 4 divisors (see below), whose sum is σ = 931140. Its totient is φ = 310378.

The previous prime is 620743. The next prime is 620759. The reversal of 620758 is 857026.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620759) 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 as a sum of consecutive naturals, namely, 155188 + ... + 155191.

It is an arithmetic number, because the mean of its divisors is an integer number (232785).

2⁶²⁰⁷⁵⁸ is an apocalyptic number.

620758 is a deficient number, since it is larger than the sum of its proper divisors (310382).

620758 is a wasteful number, since it uses less digits than its factorization.

620758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310381.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 620758 is about 787.8819708560. The cubic root of 620758 is about 85.3049255755.

It can be divided in two parts, 620 and 758, that added together give a triangular number (1378 = T₅₂).

The spelling of 620758 in words is "six hundred twenty thousand, seven hundred fifty-eight".