145654905 has 32 divisors (see below), whose sum is σ = 255581568. Its totient is φ = 70246400.

The previous prime is 145654891. The next prime is 145654913. The reversal of 145654905 is 509456541.

It is not a de Polignac number, because 145654905 - 2⁹ = 145654393 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 30265 + ... + 34745.

It is an arithmetic number, because the mean of its divisors is an integer number (7986924).

Almost surely, 2^145654905 is an apocalyptic number.

145654905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145654905 is a deficient number, since it is larger than the sum of its proper divisors (109926663).

145654905 is a wasteful number, since it uses less digits than its factorization.

145654905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697.

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 145654905 is about 12068.7573925405. The cubic root of 145654905 is about 526.1485421919.

The spelling of 145654905 in words is "one hundred forty-five million, six hundred fifty-four thousand, nine hundred five".