8461660 has 12 divisors (see below), whose sum is σ = 17769528. Its totient is φ = 3384656.

The previous prime is 8461657. The next prime is 8461693. The reversal of 8461660 is 661648.

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, 211522 + ... + 211561.

It is an arithmetic number, because the mean of its divisors is an integer number (1480794).

Almost surely, 2^8461660 is an apocalyptic number.

It is an amenable number.

8461660 is an abundant number, since it is smaller than the sum of its proper divisors (9307868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8461660 is a wasteful number, since it uses less digits than its factorization.

8461660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423092 (or 423090 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 8461660 is about 2908.8932603312. The cubic root of 8461660 is about 203.7754481620.

The spelling of 8461660 in words is "eight million, four hundred sixty-one thousand, six hundred sixty".