65994670 has 24 divisors (see below), whose sum is σ = 138185784. Its totient is φ = 22626576.

The previous prime is 65994667. The next prime is 65994671. The reversal of 65994670 is 7649956.

65994670 = 480² + 481² + ... + 675².

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65994670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65994671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66852 + ... + 67831.

It is an arithmetic number, because the mean of its divisors is an integer number (5757741).

Almost surely, 2^65994670 is an apocalyptic number.

65994670 is an abundant number, since it is smaller than the sum of its proper divisors (72191114).

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

65994670 is a wasteful number, since it uses less digits than its factorization.

65994670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134704 (or 134697 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 65994670 is about 8123.7103591893. The cubic root of 65994670 is about 404.1131230778.

The spelling of 65994670 in words is "sixty-five million, nine hundred ninety-four thousand, six hundred seventy".