145620645 has 16 divisors (see below), whose sum is σ = 236276352. Its totient is φ = 76569920.

The previous prime is 145620611. The next prime is 145620653. The reversal of 145620645 is 546026541.

It is not a de Polignac number, because 145620645 - 2⁶ = 145620581 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 67302 + ... + 69431.

It is an arithmetic number, because the mean of its divisors is an integer number (14767272).

Almost surely, 2^145620645 is an apocalyptic number.

145620645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145620645 is a deficient number, since it is larger than the sum of its proper divisors (90655707).

145620645 is a wasteful number, since it uses less digits than its factorization.

145620645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136812.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 145620645 is about 12067.3379417335. The cubic root of 145620645 is about 526.1072865438.

The spelling of 145620645 in words is "one hundred forty-five million, six hundred twenty thousand, six hundred forty-five".