69945345 has 48 divisors (see below), whose sum is σ = 125116992. Its totient is φ = 36132480.

The previous prime is 69945341. The next prime is 69945383. The reversal of 69945345 is 54354996.

It is not a de Polignac number, because 69945345 - 2² = 69945341 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 69945345.

It is not an unprimeable number, because it can be changed into a prime (69945341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227682 + ... + 227988.

It is an arithmetic number, because the mean of its divisors is an integer number (2606604).

Almost surely, 2^69945345 is an apocalyptic number.

It is an amenable number.

69945345 is a deficient number, since it is larger than the sum of its proper divisors (55171647).

69945345 is a wasteful number, since it uses less digits than its factorization.

69945345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 69945345 is about 8363.3333665471. Note that the first 4 decimals coincide. The cubic root of 69945345 is about 412.0212406965.

The spelling of 69945345 in words is "sixty-nine million, nine hundred forty-five thousand, three hundred forty-five".