65994580 has 24 divisors (see below), whose sum is σ = 141539328. Its totient is φ = 25835808.

The previous prime is 65994563. The next prime is 65994583. The reversal of 65994580 is 8549956.

It is a self number, because there is not a number n which added to its sum of digits gives 65994580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65994583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34164 + ... + 36043.

It is an arithmetic number, because the mean of its divisors is an integer number (5897472).

Almost surely, 2^65994580 is an apocalyptic number.

It is an amenable number.

65994580 is an abundant number, since it is smaller than the sum of its proper divisors (75544748).

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

65994580 is a wasteful number, since it uses less digits than its factorization.

65994580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70263 (or 70261 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 65994580 is about 8123.7048198467. The cubic root of 65994580 is about 404.1129393751.

The spelling of 65994580 in words is "sixty-five million, nine hundred ninety-four thousand, five hundred eighty".