661147360 has 48 divisors (see below), whose sum is σ = 1598301936. Its totient is φ = 258306048.

The previous prime is 661147343. The next prime is 661147363. The reversal of 661147360 is 63741166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661147363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41169 + ... + 54928.

It is an arithmetic number, because the mean of its divisors is an integer number (33297957).

Almost surely, 2^661147360 is an apocalyptic number.

It is an amenable number.

661147360 is an abundant number, since it is smaller than the sum of its proper divisors (937154576).

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

661147360 is a wasteful number, since it uses less digits than its factorization.

661147360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96155 (or 96147 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 661147360 is about 25712.7859245162. The cubic root of 661147360 is about 871.1630018104.

The spelling of 661147360 in words is "six hundred sixty-one million, one hundred forty-seven thousand, three hundred sixty".