69249145 has 16 divisors (see below), whose sum is σ = 95430528. Its totient is φ = 47255040.

The previous prime is 69249139. The next prime is 69249149. The reversal of 69249145 is 54194296.

It is not a de Polignac number, because 69249145 - 2³ = 69249137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69249098 and 69249107.

It is not an unprimeable number, because it can be changed into a prime (69249149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2697 + ... + 12073.

It is an arithmetic number, because the mean of its divisors is an integer number (5964408).

Almost surely, 2^69249145 is an apocalyptic number.

It is an amenable number.

69249145 is a deficient number, since it is larger than the sum of its proper divisors (26181383).

69249145 is a wasteful number, since it uses less digits than its factorization.

69249145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600.

The product of its digits is 77760, while the sum is 40.

The square root of 69249145 is about 8321.6071164169. The cubic root of 69249145 is about 410.6496640647.

The spelling of 69249145 in words is "sixty-nine million, two hundred forty-nine thousand, one hundred forty-five".