65464281 has 45 divisors (see below), whose sum is σ = 104653263. Its totient is φ = 40778640.

The previous prime is 65464271. The next prime is 65464307. The reversal of 65464281 is 18246456.

The square root of 65464281 is 8091.

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

65464281 is a `hidden beast` number, since 6 + 5 + 4 + 642 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34327881 + 31136400 = 5859^2 + 5580^2 .

It is not a de Polignac number, because 65464281 - 2¹¹ = 65462233 is a prime.

It is a super-2 number, since 2×65464281² = 8571144173693922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65464271) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2111736 + ... + 2111766.

Almost surely, 2^65464281 is an apocalyptic number.

65464281 is the 8091-st square number.

65464281 is the 4046-th centered octagonal number.

It is an amenable number.

65464281 is a deficient number, since it is larger than the sum of its proper divisors (39188982).

65464281 is an equidigital number, since it uses as much as digits as its factorization.

65464281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 63 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The cubic root of 65464281 is about 403.0276115204.

Multiplying 65464281 by its sum of digits (36), we get a square (2356714116 = 48546²).

The spelling of 65464281 in words is "sixty-five million, four hundred sixty-four thousand, two hundred eighty-one".