145665207 has 12 divisors (see below), whose sum is σ = 210542280. Its totient is φ = 97046928.

The previous prime is 145665181. The next prime is 145665211. The reversal of 145665207 is 702566541.

It is a happy number.

It is not a de Polignac number, because 145665207 - 2¹⁵ = 145632439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145665227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12469 + ... + 21137.

It is an arithmetic number, because the mean of its divisors is an integer number (17545190).

Almost surely, 2^145665207 is an apocalyptic number.

145665207 is a deficient number, since it is larger than the sum of its proper divisors (64877073).

145665207 is a wasteful number, since it uses less digits than its factorization.

145665207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542 (or 10539 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 145665207 is about 12069.1841894968. The cubic root of 145665207 is about 526.1609465219.

The spelling of 145665207 in words is "one hundred forty-five million, six hundred sixty-five thousand, two hundred seven".