661262 has 16 divisors (see below), whose sum is σ = 1144800. Its totient is φ = 280608.

The previous prime is 661259. The next prime is 661267. The reversal of 661262 is 262166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661267) 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, 1928 + ... + 2244.

It is an arithmetic number, because the mean of its divisors is an integer number (71550).

2⁶⁶¹²⁶² is an apocalyptic number.

661262 is a deficient number, since it is larger than the sum of its proper divisors (483538).

661262 is a wasteful number, since it uses less digits than its factorization.

661262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its digits is 864, while the sum is 23.

The square root of 661262 is about 813.1801768366. The cubic root of 661262 is about 87.1213350825.

The spelling of 661262 in words is "six hundred sixty-one thousand, two hundred sixty-two".