145645799 has 4 divisors (see below), whose sum is σ = 156849336. Its totient is φ = 134442264.

The previous prime is 145645793. The next prime is 145645823. The reversal of 145645799 is 997546541.

145645799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145645799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145645793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5601749 + ... + 5601774.

It is an arithmetic number, because the mean of its divisors is an integer number (39212334).

Almost surely, 2^145645799 is an apocalyptic number.

145645799 is a deficient number, since it is larger than the sum of its proper divisors (11203537).

145645799 is a wasteful number, since it uses less digits than its factorization.

145645799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203536.

The product of its digits is 1360800, while the sum is 50.

The square root of 145645799 is about 12068.3801315670. The cubic root of 145645799 is about 526.1375774428.

The spelling of 145645799 in words is "one hundred forty-five million, six hundred forty-five thousand, seven hundred ninety-nine".