65430688 has 24 divisors (see below), whose sum is σ = 136395252. Its totient is φ = 30790656.

The previous prime is 65430619. The next prime is 65430691. The reversal of 65430688 is 88603456.

It can be written as a sum of positive squares in 2 ways, for example, as 64834704 + 595984 = 8052^2 + 772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65430688.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59595 + ... + 60682.

Almost surely, 2^65430688 is an apocalyptic number.

65430688 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

65430688 is an abundant number, since it is smaller than the sum of its proper divisors (70964564).

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

65430688 is a wasteful number, since it uses less digits than its factorization.

65430688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120304 (or 120296 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 65430688 is about 8088.9237850285. The cubic root of 65430688 is about 402.9586618436.

The spelling of 65430688 in words is "sixty-five million, four hundred thirty thousand, six hundred eighty-eight".