661702 has 8 divisors (see below), whose sum is σ = 996336. Its totient is φ = 329592.

The previous prime is 661697. The next prime is 661721. The reversal of 661702 is 207166.

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

It is a congruent number.

It is an unprimeable number.

661702 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (124542).

2⁶⁶¹⁷⁰² is an apocalyptic number.

661702 is a deficient number, since it is larger than the sum of its proper divisors (334634).

661702 is a wasteful number, since it uses less digits than its factorization.

661702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 661702 is about 813.4506745956. The cubic root of 661702 is about 87.1406541463.

Adding to 661702 its reverse (207166), we get a palindrome (868868).

The spelling of 661702 in words is "six hundred sixty-one thousand, seven hundred two".