65465874769 has 9 divisors (see below), whose sum is σ = 65749311579. Its totient is φ = 65183657880.

The previous prime is 65465874767. The next prime is 65465874823. The reversal of 65465874769 is 96747856456.

The square root of 65465874769 is 255863.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4166057025 + 61299817744 = 64545^2 + 247588^2 .

It is not a de Polignac number, because 65465874769 - 2¹ = 65465874767 is a prime.

It is a super-2 number, since 2×65465874769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65465874767) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 84690267 + ... + 84691039.

Almost surely, 2^65465874769 is an apocalyptic number.

65465874769 is the 255863-rd square number.

65465874769 is the 127932-nd centered octagonal number.

It is an amenable number.

65465874769 is a deficient number, since it is larger than the sum of its proper divisors (283436810).

65465874769 is an frugal number, since it uses more digits than its factorization.

65465874769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 1104 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 67.

The spelling of 65465874769 in words is "sixty-five billion, four hundred sixty-five million, eight hundred seventy-four thousand, seven hundred sixty-nine".