65947660 has 12 divisors (see below), whose sum is σ = 138490128. Its totient is φ = 26379056.

The previous prime is 65947643. The next prime is 65947691. The reversal of 65947660 is 6674956.

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, 1648672 + ... + 1648711.

It is an arithmetic number, because the mean of its divisors is an integer number (11540844).

Almost surely, 2^65947660 is an apocalyptic number.

It is an amenable number.

65947660 is an abundant number, since it is smaller than the sum of its proper divisors (72542468).

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

65947660 is a wasteful number, since it uses less digits than its factorization.

65947660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297392 (or 3297390 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 65947660 is about 8120.8164614157. The cubic root of 65947660 is about 404.0171462840.

The spelling of 65947660 in words is "sixty-five million, nine hundred forty-seven thousand, six hundred sixty".