145303705 has 8 divisors (see below), whose sum is σ = 174529152. Its totient is φ = 116133168.

The previous prime is 145303703. The next prime is 145303729. The reversal of 145303705 is 507303541.

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 145303705 - 2¹ = 145303703 is a prime.

It is a super-2 number, since 2×145303705² = 42226333373454050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145303703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7659 + ... + 18688.

It is an arithmetic number, because the mean of its divisors is an integer number (21816144).

Almost surely, 2^145303705 is an apocalyptic number.

It is an amenable number.

145303705 is a deficient number, since it is larger than the sum of its proper divisors (29225447).

145303705 is a wasteful number, since it uses less digits than its factorization.

145303705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27455.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 145303705 is about 12054.1986461150. The cubic root of 145303705 is about 525.7253224761.

The spelling of 145303705 in words is "one hundred forty-five million, three hundred three thousand, seven hundred five".