69144966 has 72 divisors (see below), whose sum is σ = 168058800. Its totient is φ = 20523360.

The previous prime is 69144949. The next prime is 69144979. The reversal of 69144966 is 66944196.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 115135 + ... + 115733.

It is an arithmetic number, because the mean of its divisors is an integer number (2334150).

Almost surely, 2^69144966 is an apocalyptic number.

69144966 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 69144966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84029400).

69144966 is an abundant number, since it is smaller than the sum of its proper divisors (98913834).

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

69144966 is a wasteful number, since it uses less digits than its factorization.

69144966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 668 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 69144966 is about 8315.3452123168. The cubic root of 69144966 is about 410.4436324345.

The spelling of 69144966 in words is "sixty-nine million, one hundred forty-four thousand, nine hundred sixty-six".