69440064 has 56 divisors (see below), whose sum is σ = 184391808. Its totient is φ = 23063040.

The previous prime is 69440057. The next prime is 69440071. The reversal of 69440064 is 46004496.

It is an interprime number because it is at equal distance from previous prime (69440057) and next prime (69440071).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75769 + ... + 76679.

Almost surely, 2^69440064 is an apocalyptic number.

69440064 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 69440064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92195904).

69440064 is an abundant number, since it is smaller than the sum of its proper divisors (114951744).

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

69440064 is a wasteful number, since it uses less digits than its factorization.

69440064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 69440064 is about 8333.0705025219. The cubic root of 69440064 is about 411.0267030560.

The spelling of 69440064 in words is "sixty-nine million, four hundred forty thousand, sixty-four".