34780069 has 2 divisors, whose sum is σ = 34780070. Its totient is φ = 34780068.

The previous prime is 34780049. The next prime is 34780099. The reversal of 34780069 is 96008743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26399044 + 8381025 = 5138^2 + 2895^2 .

It is an emirp because it is prime and its reverse (96008743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34780069 - 2²¹ = 32682917 is a prime.

It is a super-2 number, since 2×34780069² = 2419306399289522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34780049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17390034 + 17390035.

It is an arithmetic number, because the mean of its divisors is an integer number (17390035).

Almost surely, 2^34780069 is an apocalyptic number.

It is an amenable number.

34780069 is a deficient number, since it is larger than the sum of its proper divisors (1).

34780069 is an equidigital number, since it uses as much as digits as its factorization.

34780069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 34780069 is about 5897.4629290908. The cubic root of 34780069 is about 326.4200395642.

The spelling of 34780069 in words is "thirty-four million, seven hundred eighty thousand, sixty-nine".