66413315 has 8 divisors (see below), whose sum is σ = 82267008. Its totient is φ = 51416640.

The previous prime is 66413299. The next prime is 66413357. The reversal of 66413315 is 51331466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66413315 - 2⁴ = 66413299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214082 + ... + 214391.

It is an arithmetic number, because the mean of its divisors is an integer number (10283376).

Almost surely, 2^66413315 is an apocalyptic number.

66413315 is a deficient number, since it is larger than the sum of its proper divisors (15853693).

66413315 is a wasteful number, since it uses less digits than its factorization.

66413315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428509.

The product of its digits is 6480, while the sum is 29.

The square root of 66413315 is about 8149.4364835858. The cubic root of 66413315 is about 404.9658356590.

The spelling of 66413315 in words is "sixty-six million, four hundred thirteen thousand, three hundred fifteen".