161407647 has 24 divisors (see below), whose sum is σ = 245765520. Its totient is φ = 105831360.

The previous prime is 161407633. The next prime is 161407651. The reversal of 161407647 is 746704161.

161407647 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 0 + 7 + 647 = 666.

It is not a de Polignac number, because 161407647 - 2⁸ = 161407391 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161407747) 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 23 ways as a sum of consecutive naturals, for example, 9379 + ... + 20267.

It is an arithmetic number, because the mean of its divisors is an integer number (10240230).

Almost surely, 2^161407647 is an apocalyptic number.

161407647 is a deficient number, since it is larger than the sum of its proper divisors (84357873).

161407647 is an equidigital number, since it uses as much as digits as its factorization.

161407647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10965 (or 10953 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 161407647 is about 12704.6309273430. The cubic root of 161407647 is about 544.4709362262.

The spelling of 161407647 in words is "one hundred sixty-one million, four hundred seven thousand, six hundred forty-seven".