69490816 has 32 divisors (see below), whose sum is σ = 141396480. Its totient is φ = 34003200.

The previous prime is 69490807. The next prime is 69490853. The reversal of 69490816 is 61809496.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241 + ... + 11791.

It is an arithmetic number, because the mean of its divisors is an integer number (4418640).

Almost surely, 2^69490816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69490816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70698240).

69490816 is an abundant number, since it is smaller than the sum of its proper divisors (71905664).

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

69490816 is a wasteful number, since it uses less digits than its factorization.

69490816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11612 (or 11600 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 69490816 is about 8336.1151623523. The cubic root of 69490816 is about 411.1268150374.

The spelling of 69490816 in words is "sixty-nine million, four hundred ninety thousand, eight hundred sixteen".