65775607 has 16 divisors (see below), whose sum is σ = 71165952. Its totient is φ = 60639040.

The previous prime is 65775571. The next prime is 65775617. The reversal of 65775607 is 70657756.

It is not a de Polignac number, because 65775607 - 2¹¹ = 65773559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65775617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76323 + ... + 77179.

It is an arithmetic number, because the mean of its divisors is an integer number (4447872).

Almost surely, 2^65775607 is an apocalyptic number.

65775607 is a deficient number, since it is larger than the sum of its proper divisors (5390345).

65775607 is a wasteful number, since it uses less digits than its factorization.

65775607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 308700, while the sum is 43.

The square root of 65775607 is about 8110.2162116678. The cubic root of 65775607 is about 403.6654891220.

The spelling of 65775607 in words is "sixty-five million, seven hundred seventy-five thousand, six hundred seven".