34780081 has 4 divisors (see below), whose sum is σ = 39748672. Its totient is φ = 29811492.

The previous prime is 34780069. The next prime is 34780099. The reversal of 34780081 is 18008743.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18008743 = 269 ⋅66947.

It is a cyclic number.

It is not a de Polignac number, because 34780081 - 2⁵ = 34780049 is a prime.

It is a super-2 number, since 2×34780081² = 2419308068733122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34780001) 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, 2484285 + ... + 2484298.

It is an arithmetic number, because the mean of its divisors is an integer number (9937168).

Almost surely, 2^34780081 is an apocalyptic number.

It is an amenable number.

34780081 is a deficient number, since it is larger than the sum of its proper divisors (4968591).

34780081 is an equidigital number, since it uses as much as digits as its factorization.

34780081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968590.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 34780081 is about 5897.4639464773. The cubic root of 34780081 is about 326.4200771053.

The spelling of 34780081 in words is "thirty-four million, seven hundred eighty thousand, eighty-one".