65742340 has 48 divisors (see below), whose sum is σ = 143850672. Its totient is φ = 25214976.

The previous prime is 65742329. The next prime is 65742353. The reversal of 65742340 is 4324756.

It can be written as a sum of positive squares in 8 ways, for example, as 746496 + 64995844 = 864^2 + 8062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53412 + ... + 54628.

It is an arithmetic number, because the mean of its divisors is an integer number (2996889).

Almost surely, 2^65742340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65742340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71925336).

65742340 is an abundant number, since it is smaller than the sum of its proper divisors (78108332).

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

65742340 is a wasteful number, since it uses less digits than its factorization.

65742340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 65742340 is about 8108.1650205210. The cubic root of 65742340 is about 403.5974243535.

The spelling of 65742340 in words is "sixty-five million, seven hundred forty-two thousand, three hundred forty".