861748 has 12 divisors (see below), whose sum is σ = 1524292. Its totient is φ = 426240.

The previous prime is 861743. The next prime is 861761. The reversal of 861748 is 847168.

861748 = 42² + 43² + ... + 138².

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 487204 + 374544 = 698^2 + 612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723 + ... + 1498.

2⁸⁶¹⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

861748 is a deficient number, since it is larger than the sum of its proper divisors (662544).

861748 is a wasteful number, since it uses less digits than its factorization.

861748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 2320 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 861748 is about 928.3038295731. The cubic root of 861748 is about 95.1612404889.

The spelling of 861748 in words is "eight hundred sixty-one thousand, seven hundred forty-eight".