145656469 has 12 divisors (see below), whose sum is σ = 169652064. Its totient is φ = 124690104.

The previous prime is 145656463. The next prime is 145656479. The reversal of 145656469 is 964656541.

It is not a de Polignac number, because 145656469 - 2²³ = 137267861 is a prime.

It is a super-2 number, since 2×145656469² = 42431613923095922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145656463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53704 + ... + 56350.

It is an arithmetic number, because the mean of its divisors is an integer number (14137672).

Almost surely, 2^145656469 is an apocalyptic number.

It is an amenable number.

145656469 is a deficient number, since it is larger than the sum of its proper divisors (23995595).

145656469 is a wasteful number, since it uses less digits than its factorization.

145656469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784 (or 3777 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The square root of 145656469 is about 12068.8221877696. The cubic root of 145656469 is about 526.1504253952.

The spelling of 145656469 in words is "one hundred forty-five million, six hundred fifty-six thousand, four hundred sixty-nine".