620679 has 8 divisors (see below), whose sum is σ = 831472. Its totient is φ = 411840.

The previous prime is 620671. The next prime is 620689. The reversal of 620679 is 976026.

620679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 620679 - 2³ = 620671 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 (620671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (103934).

2⁶²⁰⁶⁷⁹ is an apocalyptic number.

620679 is a deficient number, since it is larger than the sum of its proper divisors (210793).

620679 is a wasteful number, since it uses less digits than its factorization.

620679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 620679 is about 787.8318348480. The cubic root of 620679 is about 85.3013066800.

The spelling of 620679 in words is "six hundred twenty thousand, six hundred seventy-nine".