621089 has 8 divisors (see below), whose sum is σ = 719040. Its totient is φ = 525456.

The previous prime is 621083. The next prime is 621097. The reversal of 621089 is 980126.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621089 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 621089.

It is not an unprimeable number, because it can be changed into a prime (621083) 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, 47 + ... + 1115.

It is an arithmetic number, because the mean of its divisors is an integer number (89880).

2⁶²¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

621089 is a deficient number, since it is larger than the sum of its proper divisors (97951).

621089 is a wasteful number, since it uses less digits than its factorization.

621089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 621089 is about 788.0919997056. The cubic root of 621089 is about 85.3200849522.

The spelling of 621089 in words is "six hundred twenty-one thousand, eighty-nine".