30680087 has 4 divisors (see below), whose sum is σ = 32484816. Its totient is φ = 28875360.

The previous prime is 30680077. The next prime is 30680101. The reversal of 30680087 is 78008603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78008603 = 73 ⋅1068611.

It is a cyclic number.

It is not a de Polignac number, because 30680087 - 2¹⁸ = 30417943 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 (30680047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902339 + ... + 902372.

It is an arithmetic number, because the mean of its divisors is an integer number (8121204).

Almost surely, 2^30680087 is an apocalyptic number.

30680087 is a deficient number, since it is larger than the sum of its proper divisors (1804729).

30680087 is a wasteful number, since it uses less digits than its factorization.

30680087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804728.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 30680087 is about 5538.9608231147. The cubic root of 30680087 is about 313.0537152586.

The spelling of 30680087 in words is "thirty million, six hundred eighty thousand, eighty-seven".