620365 has 8 divisors (see below), whose sum is σ = 758808. Its totient is φ = 486720.

The previous prime is 620363. The next prime is 620377. The reversal of 620365 is 563026.

It can be written as a sum of positive squares in 4 ways, for example, as 149769 + 470596 = 387^2 + 686^2 .

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

It is not a de Polignac number, because 620365 - 2¹ = 620363 is a prime.

It is a Duffinian number.

620365 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620363) 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, 906 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (94851).

2⁶²⁰³⁶⁵ is an apocalyptic number.

It is an amenable number.

620365 is a deficient number, since it is larger than the sum of its proper divisors (138443).

620365 is a wasteful number, since it uses less digits than its factorization.

620365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 620365 is about 787.6325285309. The cubic root of 620365 is about 85.2869196789.

The spelling of 620365 in words is "six hundred twenty thousand, three hundred sixty-five".