145866705 has 32 divisors (see below), whose sum is σ = 249369600. Its totient is φ = 72591552.

The previous prime is 145866701. The next prime is 145866737. The reversal of 145866705 is 507668541.

It is not a de Polignac number, because 145866705 - 2² = 145866701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145866701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15276 + ... + 22914.

It is an arithmetic number, because the mean of its divisors is an integer number (7792800).

Almost surely, 2^145866705 is an apocalyptic number.

145866705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145866705 is a deficient number, since it is larger than the sum of its proper divisors (103502895).

145866705 is a wasteful number, since it uses less digits than its factorization.

145866705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 145866705 is about 12077.5289277236. The cubic root of 145866705 is about 526.4034467324.

The spelling of 145866705 in words is "one hundred forty-five million, eight hundred sixty-six thousand, seven hundred five".