65165765 has 8 divisors (see below), whose sum is σ = 89370240. Its totient is φ = 44685072.

The previous prime is 65165761. The next prime is 65165767. The reversal of 65165765 is 56756156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65165765 - 2² = 65165761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65165761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930905 + ... + 930974.

It is an arithmetic number, because the mean of its divisors is an integer number (11171280).

Almost surely, 2^65165765 is an apocalyptic number.

It is an amenable number.

65165765 is a deficient number, since it is larger than the sum of its proper divisors (24204475).

65165765 is a wasteful number, since it uses less digits than its factorization.

65165765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861891.

The product of its digits is 189000, while the sum is 41.

The square root of 65165765 is about 8072.5315112423. The cubic root of 65165765 is about 402.4140783380.

The spelling of 65165765 in words is "sixty-five million, one hundred sixty-five thousand, seven hundred sixty-five".