145007865 has 12 divisors (see below), whose sum is σ = 251347044. Its totient is φ = 77337504.

The previous prime is 145007839. The next prime is 145007879. The reversal of 145007865 is 568700541.

It can be written as a sum of positive squares in 2 ways, for example, as 24710841 + 120297024 = 4971^2 + 10968^2 .

It is not a de Polignac number, because 145007865 - 2⁵ = 145007833 is a prime.

It is a super-3 number, since 3×145007865³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 1611154 + ... + 1611243.

It is an arithmetic number, because the mean of its divisors is an integer number (20945587).

Almost surely, 2^145007865 is an apocalyptic number.

145007865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145007865 is a deficient number, since it is larger than the sum of its proper divisors (106339179).

145007865 is a wasteful number, since it uses less digits than its factorization.

145007865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222408 (or 3222405 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 145007865 is about 12041.9211507135. The cubic root of 145007865 is about 525.3682858060.

The spelling of 145007865 in words is "one hundred forty-five million, seven thousand, eight hundred sixty-five".