861494 has 4 divisors (see below), whose sum is σ = 1292244. Its totient is φ = 430746.

The previous prime is 861493. The next prime is 861499. The reversal of 861494 is 494168.

861494 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 is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 861494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215372 + ... + 215375.

It is an arithmetic number, because the mean of its divisors is an integer number (323061).

2⁸⁶¹⁴⁹⁴ is an apocalyptic number.

861494 is a deficient number, since it is larger than the sum of its proper divisors (430750).

861494 is a wasteful number, since it uses less digits than its factorization.

861494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430749.

The product of its digits is 6912, while the sum is 32.

The square root of 861494 is about 928.1670108337. The cubic root of 861494 is about 95.1518899865.

The spelling of 861494 in words is "eight hundred sixty-one thousand, four hundred ninety-four".