65956994 has 8 divisors (see below), whose sum is σ = 99321228. Its totient is φ = 32849920.

The previous prime is 65956973. The next prime is 65956997. The reversal of 65956994 is 49965956.

It can be written as a sum of positive squares in 2 ways, for example, as 61701025 + 4255969 = 7855^2 + 2063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65956997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63647 + ... + 64674.

Almost surely, 2^65956994 is an apocalyptic number.

65956994 is a deficient number, since it is larger than the sum of its proper divisors (33364234).

65956994 is a wasteful number, since it uses less digits than its factorization.

65956994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128580.

The product of its digits is 2624400, while the sum is 53.

The square root of 65956994 is about 8121.3911369912. The cubic root of 65956994 is about 404.0362064404.

The spelling of 65956994 in words is "sixty-five million, nine hundred fifty-six thousand, nine hundred ninety-four".