65411766 has 96 divisors (see below), whose sum is σ = 172368000. Its totient is φ = 18328464.

The previous prime is 65411743. The next prime is 65411777. The reversal of 65411766 is 66711456.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65411766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155905 + ... + 156323.

It is an arithmetic number, because the mean of its divisors is an integer number (1795500).

Almost surely, 2^65411766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65411766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86184000).

65411766 is an abundant number, since it is smaller than the sum of its proper divisors (106956234).

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

65411766 is a wasteful number, since it uses less digits than its factorization.

65411766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 490 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 65411766 is about 8087.7540763799. The cubic root of 65411766 is about 402.9198140228.

The spelling of 65411766 in words is "sixty-five million, four hundred eleven thousand, seven hundred sixty-six".