69678109 has 4 divisors (see below), whose sum is σ = 72707616. Its totient is φ = 66648604.

The previous prime is 69678101. The next prime is 69678113. The reversal of 69678109 is 90187696.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69678109 - 2³ = 69678101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69678101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514719 + ... + 1514764.

It is an arithmetic number, because the mean of its divisors is an integer number (18176904).

Almost surely, 2^69678109 is an apocalyptic number.

It is an amenable number.

69678109 is a deficient number, since it is larger than the sum of its proper divisors (3029507).

69678109 is a wasteful number, since it uses less digits than its factorization.

69678109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029506.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 69678109 is about 8347.3414330552. The cubic root of 69678109 is about 411.4958426972.

The spelling of 69678109 in words is "sixty-nine million, six hundred seventy-eight thousand, one hundred nine".