611901 has 16 divisors (see below), whose sum is σ = 918720. Its totient is φ = 402480.

The previous prime is 611887. The next prime is 611903. The reversal of 611901 is 109116.

It is not a de Polignac number, because 611901 - 2⁶ = 611837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3451 + ... + 3623.

It is an arithmetic number, because the mean of its divisors is an integer number (57420).

2⁶¹¹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

611901 is a deficient number, since it is larger than the sum of its proper divisors (306819).

611901 is a wasteful number, since it uses less digits than its factorization.

611901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 611901 is about 782.2410114536. The cubic root of 611901 is about 84.8972692001.

The spelling of 611901 in words is "six hundred eleven thousand, nine hundred one".