481668691 has 8 divisors (see below), whose sum is σ = 574412544. Its totient is φ = 394908360.

The previous prime is 481668689. The next prime is 481668703. The reversal of 481668691 is 196866184.

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

It is not a de Polignac number, because 481668691 - 2¹ = 481668689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481668661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495705 + ... + 1496026.

It is an arithmetic number, because the mean of its divisors is an integer number (71801568).

Almost surely, 2^481668691 is an apocalyptic number.

481668691 is a deficient number, since it is larger than the sum of its proper divisors (92743853).

481668691 is a wasteful number, since it uses less digits than its factorization.

481668691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991761.

The product of its digits is 497664, while the sum is 49.

The square root of 481668691 is about 21946.9517473384. The cubic root of 481668691 is about 783.8797989007.

The spelling of 481668691 in words is "four hundred eighty-one million, six hundred sixty-eight thousand, six hundred ninety-one".