65378766 has 8 divisors (see below), whose sum is σ = 130757544. Its totient is φ = 21792920.

The previous prime is 65378759. The next prime is 65378767. The reversal of 65378766 is 66787356.

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

65378766 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65378767) 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, 5448225 + ... + 5448236.

It is an arithmetic number, because the mean of its divisors is an integer number (16344693).

Almost surely, 2^65378766 is an apocalyptic number.

65378766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65378766 is a wasteful number, since it uses less digits than its factorization.

65378766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10896466.

The product of its digits is 1270080, while the sum is 48.

The square root of 65378766 is about 8085.7136976274. The cubic root of 65378766 is about 402.8520454276.

The spelling of 65378766 in words is "sixty-five million, three hundred seventy-eight thousand, seven hundred sixty-six".