65788740 has 96 divisors (see below), whose sum is σ = 213615360. Its totient is φ = 16777728.

The previous prime is 65788739. The next prime is 65788747. The reversal of 65788740 is 4788756.

65788740 is a `hidden beast` number, since 6 + 578 + 8 + 74 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (65788747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9772 + ... + 15068.

It is an arithmetic number, because the mean of its divisors is an integer number (2225160).

Almost surely, 2^65788740 is an apocalyptic number.

65788740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65788740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106807680).

65788740 is an abundant number, since it is smaller than the sum of its proper divisors (147826620).

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

65788740 is a wasteful number, since it uses less digits than its factorization.

65788740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338 (or 5330 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 65788740 is about 8111.0258290798. The cubic root of 65788740 is about 403.6923531137.

The spelling of 65788740 in words is "sixty-five million, seven hundred eighty-eight thousand, seven hundred forty".