66481005 has 16 divisors (see below), whose sum is σ = 106496064. Its totient is φ = 35414400.

The previous prime is 66480991. The next prime is 66481013. The reversal of 66481005 is 50018466.

It is not a de Polignac number, because 66481005 - 2⁴ = 66480989 is a prime.

It is a congruent number.

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, 13657 + ... + 17873.

It is an arithmetic number, because the mean of its divisors is an integer number (6656004).

Almost surely, 2^66481005 is an apocalyptic number.

It is an amenable number.

66481005 is a deficient number, since it is larger than the sum of its proper divisors (40015059).

66481005 is a wasteful number, since it uses less digits than its factorization.

66481005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 66481005 is about 8153.5884737948. The cubic root of 66481005 is about 405.1033724850.

The spelling of 66481005 in words is "sixty-six million, four hundred eighty-one thousand, five".