621064 has 16 divisors (see below), whose sum is σ = 1205100. Its totient is φ = 299712.

The previous prime is 621059. The next prime is 621083. The reversal of 621064 is 460126.

It can be written as a sum of positive squares in 2 ways, for example, as 562500 + 58564 = 750^2 + 242^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107 + ... + 1570.

2⁶²¹⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

621064 is a deficient number, since it is larger than the sum of its proper divisors (584036).

621064 is a wasteful number, since it uses less digits than its factorization.

621064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712 (or 2708 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 621064 is about 788.0761384536. The cubic root of 621064 is about 85.3189401723.

The spelling of 621064 in words is "six hundred twenty-one thousand, sixty-four".