661234 has 16 divisors (see below), whose sum is σ = 1150848. Its totient is φ = 279072.

The previous prime is 661231. The next prime is 661237. The reversal of 661234 is 432166.

661234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (661231) and next prime (661237).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661231) 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, 699 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (71928).

2⁶⁶¹²³⁴ is an apocalyptic number.

661234 is a deficient number, since it is larger than the sum of its proper divisors (489614).

661234 is a wasteful number, since it uses less digits than its factorization.

661234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its digits is 864, while the sum is 22.

The square root of 661234 is about 813.1629602976. The cubic root of 661234 is about 87.1201053976.

The spelling of 661234 in words is "six hundred sixty-one thousand, two hundred thirty-four".