69450018 has 32 divisors (see below), whose sum is σ = 158118912. Its totient is φ = 20130000.

The previous prime is 69450011. The next prime is 69450037. The reversal of 69450018 is 81005496.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69450011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21358 + ... + 24393.

It is an arithmetic number, because the mean of its divisors is an integer number (4941216).

Almost surely, 2^69450018 is an apocalyptic number.

69450018 is an abundant number, since it is smaller than the sum of its proper divisors (88668894).

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

69450018 is a wasteful number, since it uses less digits than its factorization.

69450018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45790.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 69450018 is about 8333.6677399570. The cubic root of 69450018 is about 411.0463418836.

The spelling of 69450018 in words is "sixty-nine million, four hundred fifty thousand, eighteen".