65605345 has 16 divisors (see below), whose sum is σ = 86224320. Its totient is φ = 47623104.

The previous prime is 65605339. The next prime is 65605357. The reversal of 65605345 is 54350656.

It is a cyclic number.

It is not a de Polignac number, because 65605345 - 2⁷ = 65605217 is a prime.

It is a super-2 number, since 2×65605345² = 8608122585138050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65605345.

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, 4719 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (5389020).

Almost surely, 2^65605345 is an apocalyptic number.

65605345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65605345 is a deficient number, since it is larger than the sum of its proper divisors (20618975).

65605345 is a wasteful number, since it uses less digits than its factorization.

65605345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17184.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 65605345 is about 8099.7126492240. The cubic root of 65605345 is about 403.3168883550.

The spelling of 65605345 in words is "sixty-five million, six hundred five thousand, three hundred forty-five".