65497660 has 24 divisors (see below), whose sum is σ = 142289280. Its totient is φ = 25295424.

The previous prime is 65497639. The next prime is 65497667. The reversal of 65497660 is 6679456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65497667) 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, 55884 + ... + 57043.

It is an arithmetic number, because the mean of its divisors is an integer number (5928720).

Almost surely, 2^65497660 is an apocalyptic number.

It is an amenable number.

65497660 is an abundant number, since it is smaller than the sum of its proper divisors (76791620).

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

65497660 is a wasteful number, since it uses less digits than its factorization.

65497660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112965 (or 112963 counting only the distinct ones).

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

The square root of 65497660 is about 8093.0624611453. The cubic root of 65497660 is about 403.0960986031.

The spelling of 65497660 in words is "sixty-five million, four hundred ninety-seven thousand, six hundred sixty".