145611705 has 32 divisors (see below), whose sum is σ = 242766720. Its totient is φ = 74462720.

The previous prime is 145611701. The next prime is 145611709. The reversal of 145611705 is 507116541.

It is an interprime number because it is at equal distance from previous prime (145611701) and next prime (145611709).

It is not a de Polignac number, because 145611705 - 2² = 145611701 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (145611701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34279 + ... + 38291.

It is an arithmetic number, because the mean of its divisors is an integer number (7586460).

Almost surely, 2^145611705 is an apocalyptic number.

145611705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145611705 is a deficient number, since it is larger than the sum of its proper divisors (97155015).

145611705 is a wasteful number, since it uses less digits than its factorization.

145611705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 145611705 is about 12066.9675146658. The cubic root of 145611705 is about 526.0965199948.

The spelling of 145611705 in words is "one hundred forty-five million, six hundred eleven thousand, seven hundred five".