161004727 has 8 divisors (see below), whose sum is σ = 182515760. Its totient is φ = 140797440.

The previous prime is 161004721. The next prime is 161004733. The reversal of 161004727 is 727400161.

It is an interprime number because it is at equal distance from previous prime (161004721) and next prime (161004733).

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

It is a cyclic number.

It is not a de Polignac number, because 161004727 - 2²³ = 152616119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161004695 and 161004704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161004721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325674 + ... + 326167.

It is an arithmetic number, because the mean of its divisors is an integer number (22814470).

Almost surely, 2^161004727 is an apocalyptic number.

161004727 is a deficient number, since it is larger than the sum of its proper divisors (21511033).

161004727 is a wasteful number, since it uses less digits than its factorization.

161004727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651873.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 161004727 is about 12688.7638089768. The cubic root of 161004727 is about 544.0175066003.

Adding to 161004727 its reverse (727400161), we get a palindrome (888404888).

The spelling of 161004727 in words is "one hundred sixty-one million, four thousand, seven hundred twenty-seven".