66478295 has 16 divisors (see below), whose sum is σ = 88875360. Its totient is φ = 47397504.

The previous prime is 66478289. The next prime is 66478297. The reversal of 66478295 is 59287466.

It is a cyclic number.

It is not a de Polignac number, because 66478295 - 2¹⁴ = 66461911 is a prime.

It is a super-2 number, since 2×66478295² = 8838727412214050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66478297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15749 + ... + 19518.

It is an arithmetic number, because the mean of its divisors is an integer number (5554710).

Almost surely, 2^66478295 is an apocalyptic number.

66478295 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66478295 is a deficient number, since it is larger than the sum of its proper divisors (22397065).

66478295 is a wasteful number, since it uses less digits than its factorization.

66478295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35314.

The product of its digits is 725760, while the sum is 47.

The square root of 66478295 is about 8153.4222876041. The cubic root of 66478295 is about 405.0978679300.

The spelling of 66478295 in words is "sixty-six million, four hundred seventy-eight thousand, two hundred ninety-five".