30640007 has 4 divisors (see below), whose sum is σ = 30652680. Its totient is φ = 30627336.

The previous prime is 30639953. The next prime is 30640019. The reversal of 30640007 is 70004603.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70004603 = 31 ⋅2258213.

It is a cyclic number.

It is not a de Polignac number, because 30640007 - 2¹⁰ = 30638983 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 (30640087) 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, 1457 + ... + 7962.

It is an arithmetic number, because the mean of its divisors is an integer number (7663170).

Almost surely, 2^30640007 is an apocalyptic number.

30640007 is a deficient number, since it is larger than the sum of its proper divisors (12673).

30640007 is an equidigital number, since it uses as much as digits as its factorization.

30640007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 30640007 is about 5535.3416335399. The cubic root of 30640007 is about 312.9173329781.

The spelling of 30640007 in words is "thirty million, six hundred forty thousand, seven".