65246660 has 24 divisors (see below), whose sum is σ = 137169816. Its totient is φ = 26069760.

The previous prime is 65246641. The next prime is 65246681. The reversal of 65246660 is 6664256.

It can be written as a sum of positive squares in 4 ways, for example, as 8213956 + 57032704 = 2866^2 + 7552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65246660.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34130 + ... + 35990.

It is an arithmetic number, because the mean of its divisors is an integer number (5715409).

Almost surely, 2^65246660 is an apocalyptic number.

It is an amenable number.

65246660 is an abundant number, since it is smaller than the sum of its proper divisors (71923156).

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

65246660 is a wasteful number, since it uses less digits than its factorization.

65246660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 65246660 is about 8077.5404672462. The cubic root of 65246660 is about 402.5805247632.

The spelling of 65246660 in words is "sixty-five million, two hundred forty-six thousand, six hundred sixty".