65466381 has 32 divisors (see below), whose sum is σ = 95356800. Its totient is φ = 39813120.

The previous prime is 65466361. The next prime is 65466391. The reversal of 65466381 is 18366456.

It is not a de Polignac number, because 65466381 - 2¹⁴ = 65449997 is a prime.

It is a super-2 number, since 2×65466381² = 8571694082474322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65466301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254605 + ... + 254861.

It is an arithmetic number, because the mean of its divisors is an integer number (2979900).

Almost surely, 2^65466381 is an apocalyptic number.

It is an amenable number.

65466381 is a deficient number, since it is larger than the sum of its proper divisors (29890419).

65466381 is a wasteful number, since it uses less digits than its factorization.

65466381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429.

The product of its digits is 103680, while the sum is 39.

The square root of 65466381 is about 8091.1297727820. The cubic root of 65466381 is about 403.0319209897.

The spelling of 65466381 in words is "sixty-five million, four hundred sixty-six thousand, three hundred eighty-one".