170426749 has 6 divisors (see below), whose sum is σ = 172798746. Its totient is φ = 168086880.

The previous prime is 170426719. The next prime is 170426771. The reversal of 170426749 is 947624071.

It can be written as a sum of positive squares in 3 ways, for example, as 6125625 + 164301124 = 2475^2 + 12818^2 .

It is not a de Polignac number, because 170426749 - 2⁹ = 170426237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170426719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10662 + ... + 21319.

It is an arithmetic number, because the mean of its divisors is an integer number (28799791).

Almost surely, 2^170426749 is an apocalyptic number.

It is an amenable number.

170426749 is a deficient number, since it is larger than the sum of its proper divisors (2371997).

170426749 is an frugal number, since it uses more digits than its factorization.

170426749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32127 (or 32054 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 170426749 is about 13054.7596301119. The cubic root of 170426749 is about 554.4289763092.

The spelling of 170426749 in words is "one hundred seventy million, four hundred twenty-six thousand, seven hundred forty-nine".