611490 has 64 divisors (see below), whose sum is σ = 1710720. Its totient is φ = 138240.

The previous prime is 611483. The next prime is 611497. The reversal of 611490 is 94116.

It is an interprime number because it is at equal distance from previous prime (611483) and next prime (611497).

It is not an unprimeable number, because it can be changed into a prime (611497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5556 + ... + 5664.

It is an arithmetic number, because the mean of its divisors is an integer number (26730).

2⁶¹¹⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855360).

611490 is an abundant number, since it is smaller than the sum of its proper divisors (1099230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611490 is a wasteful number, since it uses less digits than its factorization.

611490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 611490 is about 781.9782605674. The cubic root of 611490 is about 84.8782570871.

It can be divided in two parts, 61 and 1490, that added together give a palindrome (1551).

The spelling of 611490 in words is "six hundred eleven thousand, four hundred ninety".