30636761 has 2 divisors, whose sum is σ = 30636762. Its totient is φ = 30636760.

The previous prime is 30636751. The next prime is 30636803. The reversal of 30636761 is 16763603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28729600 + 1907161 = 5360^2 + 1381^2 .

It is an emirp because it is prime and its reverse (16763603) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30636761 is a prime.

It is a super-2 number, since 2×30636761² = 1877222249142242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30636751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15318380 + 15318381.

It is an arithmetic number, because the mean of its divisors is an integer number (15318381).

Almost surely, 2^30636761 is an apocalyptic number.

It is an amenable number.

30636761 is a deficient number, since it is larger than the sum of its proper divisors (1).

30636761 is an equidigital number, since it uses as much as digits as its factorization.

30636761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 30636761 is about 5535.0484189391. The cubic root of 30636761 is about 312.9062824417.

The spelling of 30636761 in words is "thirty million, six hundred thirty-six thousand, seven hundred sixty-one".