30664693 has 2 divisors, whose sum is σ = 30664694. Its totient is φ = 30664692.

The previous prime is 30664663. The next prime is 30664709. The reversal of 30664693 is 39646603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30547729 + 116964 = 5527^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 30664693 - 2⁵ = 30664661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30664603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15332346 + 15332347.

It is an arithmetic number, because the mean of its divisors is an integer number (15332347).

Almost surely, 2^30664693 is an apocalyptic number.

It is an amenable number.

30664693 is a deficient number, since it is larger than the sum of its proper divisors (1).

30664693 is an equidigital number, since it uses as much as digits as its factorization.

30664693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 30664693 is about 5537.5710379191. The cubic root of 30664693 is about 313.0013473592.

The spelling of 30664693 in words is "thirty million, six hundred sixty-four thousand, six hundred ninety-three".