69656064 has 80 divisors (see below), whose sum is σ = 187822800. Its totient is φ = 22937600.

The previous prime is 69656063. The next prime is 69656077. The reversal of 69656064 is 46065696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69656063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154912 + ... + 155360.

It is an arithmetic number, because the mean of its divisors is an integer number (2347785).

Almost surely, 2^69656064 is an apocalyptic number.

69656064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69656064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93911400).

69656064 is an abundant number, since it is smaller than the sum of its proper divisors (118166736).

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

69656064 is a wasteful number, since it uses less digits than its factorization.

69656064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 69656064 is about 8346.0208482845. The cubic root of 69656064 is about 411.4524412959.

The spelling of 69656064 in words is "sixty-nine million, six hundred fifty-six thousand, sixty-four".