69788797 has 4 divisors (see below), whose sum is σ = 75157180. Its totient is φ = 64420416.

The previous prime is 69788779. The next prime is 69788801. The reversal of 69788797 is 79788796.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33860761 + 35928036 = 5819^2 + 5994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69788797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69788777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684172 + ... + 2684197.

It is an arithmetic number, because the mean of its divisors is an integer number (18789295).

Almost surely, 2^69788797 is an apocalyptic number.

It is an amenable number.

69788797 is a deficient number, since it is larger than the sum of its proper divisors (5368383).

69788797 is a wasteful number, since it uses less digits than its factorization.

69788797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368382.

The product of its digits is 10668672, while the sum is 61.

The square root of 69788797 is about 8353.9689369784. The cubic root of 69788797 is about 411.7136229791.

Subtracting 69788797 from its reverse (79788796), we obtain a palindrome (9999999).

The spelling of 69788797 in words is "sixty-nine million, seven hundred eighty-eight thousand, seven hundred ninety-seven".