620725 has 12 divisors (see below), whose sum is σ = 879904. Its totient is φ = 425520.

The previous prime is 620717. The next prime is 620731. The reversal of 620725 is 527026.

It is not a de Polignac number, because 620725 - 2³ = 620717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620696 and 620705.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1599 + ... + 1948.

2⁶²⁰⁷²⁵ is an apocalyptic number.

It is an amenable number.

620725 is a deficient number, since it is larger than the sum of its proper divisors (259179).

620725 is a wasteful number, since it uses less digits than its factorization.

620725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564 (or 3559 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 620725 is about 787.8610283546. The cubic root of 620725 is about 85.3034139223.

The spelling of 620725 in words is "six hundred twenty thousand, seven hundred twenty-five".