30686869 has 8 divisors (see below), whose sum is σ = 31876352. Its totient is φ = 29509920.

The previous prime is 30686867. The next prime is 30686897. The reversal of 30686869 is 96868603.

It is a happy number.

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 30686869 - 2¹ = 30686867 is a prime.

It is a super-2 number, since 2×30686869² = 1883367858046322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30686863) 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, 2017 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (3984544).

Almost surely, 2^30686869 is an apocalyptic number.

It is an amenable number.

30686869 is a deficient number, since it is larger than the sum of its proper divisors (1189483).

30686869 is a wasteful number, since it uses less digits than its factorization.

30686869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 30686869 is about 5539.5729979846. The cubic root of 30686869 is about 313.0767809676.

The spelling of 30686869 in words is "thirty million, six hundred eighty-six thousand, eight hundred sixty-nine".