661294 has 8 divisors (see below), whose sum is σ = 1006128. Its totient is φ = 325920.

The previous prime is 661267. The next prime is 661321. The reversal of 661294 is 492166.

661294 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 (661267) and next prime (661321).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (125766).

2⁶⁶¹²⁹⁴ is an apocalyptic number.

661294 is a deficient number, since it is larger than the sum of its proper divisors (344834).

661294 is a wasteful number, since it uses less digits than its factorization.

661294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730.

The product of its digits is 2592, while the sum is 28.

The square root of 661294 is about 813.1998524348. The cubic root of 661294 is about 87.1227403943.

The spelling of 661294 in words is "six hundred sixty-one thousand, two hundred ninety-four".