145871705 has 8 divisors (see below), whose sum is σ = 200052672. Its totient is φ = 100026288.

The previous prime is 145871699. The next prime is 145871717. The reversal of 145871705 is 507178541.

It is a happy number.

145871705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145871705 - 2⁶ = 145871641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083847 + ... + 2083916.

It is an arithmetic number, because the mean of its divisors is an integer number (25006584).

Almost surely, 2^145871705 is an apocalyptic number.

It is an amenable number.

145871705 is a deficient number, since it is larger than the sum of its proper divisors (54180967).

145871705 is an equidigital number, since it uses as much as digits as its factorization.

145871705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167775.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 145871705 is about 12077.7359219350. The cubic root of 145871705 is about 526.4094613267.

The spelling of 145871705 in words is "one hundred forty-five million, eight hundred seventy-one thousand, seven hundred five".