34780073 has 4 divisors (see below), whose sum is σ = 34863108. Its totient is φ = 34697040.

The previous prime is 34780069. The next prime is 34780099. The reversal of 34780073 is 37008743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37008743 = 113 ⋅327511.

It can be written as a sum of positive squares in 2 ways, for example, as 9909904 + 24870169 = 3148^2 + 4987^2 .

It is a cyclic number.

It is not a de Polignac number, because 34780073 - 2² = 34780069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34780033) 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, 40886 + ... + 41727.

It is an arithmetic number, because the mean of its divisors is an integer number (8715777).

Almost surely, 2^34780073 is an apocalyptic number.

It is an amenable number.

34780073 is a deficient number, since it is larger than the sum of its proper divisors (83035).

34780073 is an equidigital number, since it uses as much as digits as its factorization.

34780073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83034.

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

The square root of 34780073 is about 5897.4632682197. The cubic root of 34780073 is about 326.4200520779.

The spelling of 34780073 in words is "thirty-four million, seven hundred eighty thousand, seventy-three".