145769805 has 48 divisors (see below), whose sum is σ = 275184000. Its totient is φ = 71100288.

The previous prime is 145769797. The next prime is 145769821. The reversal of 145769805 is 508967541.

It is not a de Polignac number, because 145769805 - 2³ = 145769797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21856 + ... + 27734.

It is an arithmetic number, because the mean of its divisors is an integer number (5733000).

Almost surely, 2^145769805 is an apocalyptic number.

145769805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145769805 is a deficient number, since it is larger than the sum of its proper divisors (129414195).

145769805 is a wasteful number, since it uses less digits than its factorization.

145769805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938 (or 5935 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 145769805 is about 12073.5166790790. The cubic root of 145769805 is about 526.2868567420.

The spelling of 145769805 in words is "one hundred forty-five million, seven hundred sixty-nine thousand, eight hundred five".