65494566 has 24 divisors (see below), whose sum is σ = 143502840. Its totient is φ = 21585696.

The previous prime is 65494531. The next prime is 65494579. The reversal of 65494566 is 66549456.

65494566 is a `hidden beast` number, since 6 + 549 + 45 + 66 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18840 + ... + 22043.

It is an arithmetic number, because the mean of its divisors is an integer number (5979285).

Almost surely, 2^65494566 is an apocalyptic number.

65494566 is an abundant number, since it is smaller than the sum of its proper divisors (78008274).

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

65494566 is a wasteful number, since it uses less digits than its factorization.

65494566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40980 (or 40977 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 65494566 is about 8092.8713075150. The cubic root of 65494566 is about 403.0897513078.

The spelling of 65494566 in words is "sixty-five million, four hundred ninety-four thousand, five hundred sixty-six".