30680651 has 4 divisors (see below), whose sum is σ = 30737904. Its totient is φ = 30623400.

The previous prime is 30680641. The next prime is 30680717. The reversal of 30680651 is 15608603.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30680651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30680641) 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, 27815 + ... + 28896.

It is an arithmetic number, because the mean of its divisors is an integer number (7684476).

Almost surely, 2^30680651 is an apocalyptic number.

30680651 is a deficient number, since it is larger than the sum of its proper divisors (57253).

30680651 is an equidigital number, since it uses as much as digits as its factorization.

30680651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57252.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 30680651 is about 5539.0117349578. The cubic root of 30680651 is about 313.0556335628.

The spelling of 30680651 in words is "thirty million, six hundred eighty thousand, six hundred fifty-one".