66464353 has 4 divisors (see below), whose sum is σ = 66480660. Its totient is φ = 66448048.

The previous prime is 66464327. The next prime is 66464381. The reversal of 66464353 is 35346466.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35346466 = 2 ⋅17673233.

It can be written as a sum of positive squares in 2 ways, for example, as 14379264 + 52085089 = 3792^2 + 7217^2 .

It is a cyclic number.

It is not a de Polignac number, because 66464353 - 2⁹ = 66463841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66464323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3951 + ... + 12187.

It is an arithmetic number, because the mean of its divisors is an integer number (16620165).

Almost surely, 2^66464353 is an apocalyptic number.

It is an amenable number.

66464353 is a deficient number, since it is larger than the sum of its proper divisors (16307).

66464353 is an equidigital number, since it uses as much as digits as its factorization.

66464353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16306.

The product of its digits is 155520, while the sum is 37.

The square root of 66464353 is about 8152.5672643653. The cubic root of 66464353 is about 405.0695465590.

The spelling of 66464353 in words is "sixty-six million, four hundred sixty-four thousand, three hundred fifty-three".