172486747 has 4 divisors (see below), whose sum is σ = 172796976. Its totient is φ = 172176520.

The previous prime is 172486739. The next prime is 172486753. The reversal of 172486747 is 747684271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747684271 = 37 ⋅20207683.

It is a cyclic number.

It is not a de Polignac number, because 172486747 - 2³ = 172486739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172486697 and 172486706.

It is not an unprimeable number, because it can be changed into a prime (172486547) 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, 154279 + ... + 155392.

It is an arithmetic number, because the mean of its divisors is an integer number (43199244).

Almost surely, 2^172486747 is an apocalyptic number.

172486747 is a deficient number, since it is larger than the sum of its proper divisors (310229).

172486747 is an equidigital number, since it uses as much as digits as its factorization.

172486747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310228.

The product of its digits is 526848, while the sum is 46.

The square root of 172486747 is about 13133.4209937853. The cubic root of 172486747 is about 556.6538843125.

The spelling of 172486747 in words is "one hundred seventy-two million, four hundred eighty-six thousand, seven hundred forty-seven".