69779680 has 48 divisors (see below), whose sum is σ = 166017600. Its totient is φ = 27715072.

The previous prime is 69779659. The next prime is 69779683. The reversal of 69779680 is 8697796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69779683) 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, 22377 + ... + 25303.

It is an arithmetic number, because the mean of its divisors is an integer number (3458700).

Almost surely, 2^69779680 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 69779680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83008800).

69779680 is an abundant number, since it is smaller than the sum of its proper divisors (96237920).

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

69779680 is a wasteful number, since it uses less digits than its factorization.

69779680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091 (or 3083 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 69779680 is about 8353.4232503806. The cubic root of 69779680 is about 411.6956938524.

The spelling of 69779680 in words is "sixty-nine million, seven hundred seventy-nine thousand, six hundred eighty".