65617067 has 4 divisors (see below), whose sum is σ = 66057600. Its totient is φ = 65176536.

The previous prime is 65617063. The next prime is 65617103. The reversal of 65617067 is 76071656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65617067 - 2² = 65617063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65617067.

It is not an unprimeable number, because it can be changed into a prime (65617063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220043 + ... + 220340.

It is an arithmetic number, because the mean of its divisors is an integer number (16514400).

Almost surely, 2^65617067 is an apocalyptic number.

65617067 is a deficient number, since it is larger than the sum of its proper divisors (440533).

65617067 is a wasteful number, since it uses less digits than its factorization.

65617067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440532.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 65617067 is about 8100.4362228216. The cubic root of 65617067 is about 403.3409077344.

The spelling of 65617067 in words is "sixty-five million, six hundred seventeen thousand, sixty-seven".