69313644 has 120 divisors (see below), whose sum is σ = 191679488. Its totient is φ = 21811680.

The previous prime is 69313603. The next prime is 69313649. The reversal of 69313644 is 44631396.

69313644 is a `hidden beast` number, since 6 + 9 + 3 + 1 + 3 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 69313599 and 69313608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69313649) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 672897 + ... + 672999.

Almost surely, 2^69313644 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 69313644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95839744).

69313644 is an abundant number, since it is smaller than the sum of its proper divisors (122365844).

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

69313644 is a wasteful number, since it uses less digits than its factorization.

69313644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 206 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 69313644 is about 8325.4816076909. The cubic root of 69313644 is about 410.7771182194. Note that the first 3 decimals are identical.

The spelling of 69313644 in words is "sixty-nine million, three hundred thirteen thousand, six hundred forty-four".