69782864 has 10 divisors (see below), whose sum is σ = 135204330. Its totient is φ = 34891424.

The previous prime is 69782863. The next prime is 69782873. The reversal of 69782864 is 46828796.

It can be written as a sum of positive squares in only one way, i.e., 44782864 + 25000000 = 6692^2 + 5000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69782863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2180699 + ... + 2180730.

It is an arithmetic number, because the mean of its divisors is an integer number (13520433).

Almost surely, 2^69782864 is an apocalyptic number.

It is an amenable number.

69782864 is a deficient number, since it is larger than the sum of its proper divisors (65421466).

69782864 is a wasteful number, since it uses less digits than its factorization.

69782864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361437 (or 4361431 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 69782864 is about 8353.6138287570. The cubic root of 69782864 is about 411.7019555566.

The spelling of 69782864 in words is "sixty-nine million, seven hundred eighty-two thousand, eight hundred sixty-four".