30700657 has 8 divisors (see below), whose sum is σ = 35007336. Its totient is φ = 26671872.

The previous prime is 30700627. The next prime is 30700679. The reversal of 30700657 is 75600703.

It can be written as a sum of positive squares in 4 ways, for example, as 53361 + 30647296 = 231^2 + 5536^2 .

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 30700657 - 2⁷ = 30700529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30700627) 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, 69238 + ... + 69679.

It is an arithmetic number, because the mean of its divisors is an integer number (4375917).

Almost surely, 2^30700657 is an apocalyptic number.

It is an amenable number.

30700657 is a deficient number, since it is larger than the sum of its proper divisors (4306679).

30700657 is a wasteful number, since it uses less digits than its factorization.

30700657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138947.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 30700657 is about 5540.8173584770. The cubic root of 30700657 is about 313.1236637380.

The spelling of 30700657 in words is "thirty million, seven hundred thousand, six hundred fifty-seven".