66472385 has 16 divisors (see below), whose sum is σ = 91604352. Its totient is φ = 45360000.

The previous prime is 66472349. The next prime is 66472391. The reversal of 66472385 is 58327466.

It is a happy number.

It is not a de Polignac number, because 66472385 - 2¹⁴ = 66456001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2885 + ... + 11885.

It is an arithmetic number, because the mean of its divisors is an integer number (5725272).

Almost surely, 2^66472385 is an apocalyptic number.

It is an amenable number.

66472385 is a deficient number, since it is larger than the sum of its proper divisors (25131967).

66472385 is a wasteful number, since it uses less digits than its factorization.

66472385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9224.

The product of its digits is 241920, while the sum is 41.

The square root of 66472385 is about 8153.0598550483. The cubic root of 66472385 is about 405.0858630124.

The spelling of 66472385 in words is "sixty-six million, four hundred seventy-two thousand, three hundred eighty-five".