172046747 has 2 divisors, whose sum is σ = 172046748. Its totient is φ = 172046746.

The previous prime is 172046711. The next prime is 172046759. The reversal of 172046747 is 747640271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172046747 - 2⁸ = 172046491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172046747.

It is not a weakly prime, because it can be changed into another prime (172040747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86023373 + 86023374.

It is an arithmetic number, because the mean of its divisors is an integer number (86023374).

Almost surely, 2^172046747 is an apocalyptic number.

172046747 is a deficient number, since it is larger than the sum of its proper divisors (1).

172046747 is an equidigital number, since it uses as much as digits as its factorization.

172046747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 172046747 is about 13116.6591401927. The cubic root of 172046747 is about 556.1801546440.

The spelling of 172046747 in words is "one hundred seventy-two million, forty-six thousand, seven hundred forty-seven".