66480361 has 4 divisors (see below), whose sum is σ = 66528000. Its totient is φ = 66432724.

The previous prime is 66480343. The next prime is 66480367. The reversal of 66480361 is 16308466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66480361 - 2⁷ = 66480233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66480367) 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, 21661 + ... + 24538.

It is an arithmetic number, because the mean of its divisors is an integer number (16632000).

Almost surely, 2^66480361 is an apocalyptic number.

It is an amenable number.

66480361 is a deficient number, since it is larger than the sum of its proper divisors (47639).

66480361 is a wasteful number, since it uses less digits than its factorization.

66480361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47638.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 66480361 is about 8153.5489818851. The cubic root of 66480361 is about 405.1020644050.

The spelling of 66480361 in words is "sixty-six million, four hundred eighty thousand, three hundred sixty-one".