65254780 has 24 divisors (see below), whose sum is σ = 140379120. Its totient is φ = 25464960.

The previous prime is 65254733. The next prime is 65254781. The reversal of 65254780 is 8745256.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65254781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38970 + ... + 40609.

It is an arithmetic number, because the mean of its divisors is an integer number (5849130).

Almost surely, 2^65254780 is an apocalyptic number.

It is an amenable number.

65254780 is an abundant number, since it is smaller than the sum of its proper divisors (75124340).

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

65254780 is a wasteful number, since it uses less digits than its factorization.

65254780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79629 (or 79627 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 65254780 is about 8078.0430798554. The cubic root of 65254780 is about 402.5972245619.

The spelling of 65254780 in words is "sixty-five million, two hundred fifty-four thousand, seven hundred eighty".