69145450 has 48 divisors (see below), whose sum is σ = 141598080. Its totient is φ = 25119600.

The previous prime is 69145403. The next prime is 69145451. The reversal of 69145450 is 5454196.

It is not an unprimeable number, because it can be changed into a prime (69145451) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 66031 + ... + 67069.

It is an arithmetic number, because the mean of its divisors is an integer number (2949960).

Almost surely, 2^69145450 is an apocalyptic number.

69145450 is an abundant number, since it is smaller than the sum of its proper divisors (72452630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69145450 is a wasteful number, since it uses less digits than its factorization.

69145450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 69145450 is about 8315.3743150865. The cubic root of 69145450 is about 410.4445901049. Note that the first 3 decimals are identical.

The spelling of 69145450 in words is "sixty-nine million, one hundred forty-five thousand, four hundred fifty".