34781629 has 2 divisors, whose sum is σ = 34781630. Its totient is φ = 34781628.

The previous prime is 34781603. The next prime is 34781639. The reversal of 34781629 is 92618743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23990404 + 10791225 = 4898^2 + 3285^2 .

It is a cyclic number.

It is not a de Polignac number, because 34781629 - 2¹¹ = 34779581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34781591 and 34781600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34781639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17390814 + 17390815.

It is an arithmetic number, because the mean of its divisors is an integer number (17390815).

Almost surely, 2^34781629 is an apocalyptic number.

It is an amenable number.

34781629 is a deficient number, since it is larger than the sum of its proper divisors (1).

34781629 is an equidigital number, since it uses as much as digits as its factorization.

34781629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 34781629 is about 5897.5951878711. The cubic root of 34781629 is about 326.4249198272.

The spelling of 34781629 in words is "thirty-four million, seven hundred eighty-one thousand, six hundred twenty-nine".