65380770 has 160 divisors (see below), whose sum is σ = 216615168. Its totient is φ = 13779072.

The previous prime is 65380751. The next prime is 65380801. The reversal of 65380770 is 7708356.

65380770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 73267 + ... + 74153.

Almost surely, 2^65380770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65380770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108307584).

65380770 is an abundant number, since it is smaller than the sum of its proper divisors (151234398).

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

65380770 is a wasteful number, since it uses less digits than its factorization.

65380770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 65380770 is about 8085.8376189483. The cubic root of 65380770 is about 402.8561614799.

The spelling of 65380770 in words is "sixty-five million, three hundred eighty thousand, seven hundred seventy".