65852778 has 8 divisors (see below), whose sum is σ = 131705568. Its totient is φ = 21950924.

The previous prime is 65852771. The next prime is 65852797. The reversal of 65852778 is 87725856.

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

65852778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (65852771) 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, 5487726 + ... + 5487737.

It is an arithmetic number, because the mean of its divisors is an integer number (16463196).

Almost surely, 2^65852778 is an apocalyptic number.

65852778 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.

65852778 is a wasteful number, since it uses less digits than its factorization.

65852778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975468.

The product of its digits is 940800, while the sum is 48.

The square root of 65852778 is about 8114.9724583636. The cubic root of 65852778 is about 403.8232937962.

The spelling of 65852778 in words is "sixty-five million, eight hundred fifty-two thousand, seven hundred seventy-eight".