621061 has 12 divisors (see below), whose sum is σ = 756448. Its totient is φ = 499392.

The previous prime is 621059. The next prime is 621083. The reversal of 621061 is 160126.

It is not a de Polignac number, because 621061 - 2¹ = 621059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1870 + ... + 2176.

2⁶²¹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

621061 is a deficient number, since it is larger than the sum of its proper divisors (135387).

621061 is a wasteful number, since it uses less digits than its factorization.

621061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 621061 is about 788.0742350819. The cubic root of 621061 is about 85.3188027966.

Adding to 621061 its reverse (160126), we get a palindrome (781187).

The spelling of 621061 in words is "six hundred twenty-one thousand, sixty-one".