69640075 has 12 divisors (see below), whose sum is σ = 91433880. Its totient is φ = 52434560.

The previous prime is 69640063. The next prime is 69640079. The reversal of 69640075 is 57004696.

It is not a de Polignac number, because 69640075 - 2¹³ = 69631883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69640079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81505 + ... + 82354.

It is an arithmetic number, because the mean of its divisors is an integer number (7619490).

Almost surely, 2^69640075 is an apocalyptic number.

69640075 is a deficient number, since it is larger than the sum of its proper divisors (21793805).

69640075 is a wasteful number, since it uses less digits than its factorization.

69640075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163886 (or 163881 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 69640075 is about 8345.0629116862. The cubic root of 69640075 is about 411.4209569994.

The spelling of 69640075 in words is "sixty-nine million, six hundred forty thousand, seventy-five".