661466060 has 12 divisors (see below), whose sum is σ = 1389078768. Its totient is φ = 264586416.

The previous prime is 661466059. The next prime is 661466077. The reversal of 661466060 is 60664166.

It is a self number, because there is not a number n which added to its sum of digits gives 661466060.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16536632 + ... + 16536671.

It is an arithmetic number, because the mean of its divisors is an integer number (115756564).

Almost surely, 2^661466060 is an apocalyptic number.

It is an amenable number.

661466060 is an abundant number, since it is smaller than the sum of its proper divisors (727612708).

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

661466060 is a wasteful number, since it uses less digits than its factorization.

661466060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33073312 (or 33073310 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 661466060 is about 25718.9824837609. The cubic root of 661466060 is about 871.3029580270.

The spelling of 661466060 in words is "six hundred sixty-one million, four hundred sixty-six thousand, sixty".