30747641 has 2 divisors, whose sum is σ = 30747642. Its totient is φ = 30747640.

The previous prime is 30747571. The next prime is 30747671. The reversal of 30747641 is 14674703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 1371241 = 5420^2 + 1171^2 .

It is an emirp because it is prime and its reverse (14674703) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30747641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30747598 and 30747607.

It is not a weakly prime, because it can be changed into another prime (30747671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15373820 + 15373821.

It is an arithmetic number, because the mean of its divisors is an integer number (15373821).

Almost surely, 2^30747641 is an apocalyptic number.

It is an amenable number.

30747641 is a deficient number, since it is larger than the sum of its proper divisors (1).

30747641 is an equidigital number, since it uses as much as digits as its factorization.

30747641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 30747641 is about 5545.0555452583. The cubic root of 30747641 is about 313.2833161699.

The spelling of 30747641 in words is "thirty million, seven hundred forty-seven thousand, six hundred forty-one".