65676765 has 64 divisors (see below), whose sum is σ = 132544512. Its totient is φ = 26976000.

The previous prime is 65676761. The next prime is 65676769. The reversal of 65676765 is 56767656.

65676765 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (65676761) and next prime (65676769).

It is not a de Polignac number, because 65676765 - 2² = 65676761 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65676761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116374 + ... + 116936.

It is an arithmetic number, because the mean of its divisors is an integer number (2071008).

Almost surely, 2^65676765 is an apocalyptic number.

It is an amenable number.

65676765 is an abundant number, since it is smaller than the sum of its proper divisors (66867747).

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

65676765 is a wasteful number, since it uses less digits than its factorization.

65676765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 1587600, while the sum is 48.

The square root of 65676765 is about 8104.1202483675. The cubic root of 65676765 is about 403.4631896757.

It can be divided in two parts, 656 and 76765, that added together give a triangular number (77421 = T₃₉₃).

The spelling of 65676765 in words is "sixty-five million, six hundred seventy-six thousand, seven hundred sixty-five".