611642 has 4 divisors (see below), whose sum is σ = 917466. Its totient is φ = 305820.

The previous prime is 611641. The next prime is 611657. The reversal of 611642 is 246116.

It is a happy number.

611642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 609961 + 1681 = 781^2 + 41^2 .

It is not an unprimeable number, because it can be changed into a prime (611641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152909 + ... + 152912.

2⁶¹¹⁶⁴² is an apocalyptic number.

611642 is a deficient number, since it is larger than the sum of its proper divisors (305824).

611642 is a wasteful number, since it uses less digits than its factorization.

611642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305823.

The product of its digits is 288, while the sum is 20.

The square root of 611642 is about 782.0754439311. The cubic root of 611642 is about 84.8852893233.

Adding to 611642 its reverse (246116), we get a palindrome (857758).

The spelling of 611642 in words is "six hundred eleven thousand, six hundred forty-two".