170641427 has 8 divisors (see below), whose sum is σ = 197104752. Its totient is φ = 146003200.

The previous prime is 170641409. The next prime is 170641441. The reversal of 170641427 is 724146071.

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 170641427 - 2⁶ = 170641363 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 170641393 and 170641402.

It is not an unprimeable number, because it can be changed into a prime (170641727) 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, 456074 + ... + 456447.

It is an arithmetic number, because the mean of its divisors is an integer number (24638094).

Almost surely, 2^170641427 is an apocalyptic number.

170641427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

170641427 is a deficient number, since it is larger than the sum of its proper divisors (26463325).

170641427 is a wasteful number, since it uses less digits than its factorization.

170641427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912549.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 170641427 is about 13062.9792543661. The cubic root of 170641427 is about 554.6616740583.

Adding to 170641427 its reverse (724146071), we get a palindrome (894787498).

The spelling of 170641427 in words is "one hundred seventy million, six hundred forty-one thousand, four hundred twenty-seven".