69840077 has 8 divisors (see below), whose sum is σ = 71188416. Its totient is φ = 68504832.

The previous prime is 69840047. The next prime is 69840083. The reversal of 69840077 is 77004896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69840077 - 2⁶ = 69840013 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 (69840047) 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 7 ways as a sum of consecutive naturals, for example, 7853 + ... + 14189.

It is an arithmetic number, because the mean of its divisors is an integer number (8898552).

Almost surely, 2^69840077 is an apocalyptic number.

It is an amenable number.

69840077 is a deficient number, since it is larger than the sum of its proper divisors (1348339).

69840077 is a wasteful number, since it uses less digits than its factorization.

69840077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 69840077 is about 8357.0375732074. The cubic root of 69840077 is about 411.8144390914.

The spelling of 69840077 in words is "sixty-nine million, eight hundred forty thousand, seventy-seven".