34780621 has 4 divisors (see below), whose sum is σ = 36611200. Its totient is φ = 32950044.

The previous prime is 34780597. The next prime is 34780637. The reversal of 34780621 is 12608743.

34780621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 34780621 - 2²³ = 26392013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34780651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915261 + ... + 915298.

It is an arithmetic number, because the mean of its divisors is an integer number (9152800).

Almost surely, 2^34780621 is an apocalyptic number.

It is an amenable number.

34780621 is a deficient number, since it is larger than the sum of its proper divisors (1830579).

34780621 is a wasteful number, since it uses less digits than its factorization.

34780621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830578.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 34780621 is about 5897.5097286906. The cubic root of 34780621 is about 326.4217664432.

The spelling of 34780621 in words is "thirty-four million, seven hundred eighty thousand, six hundred twenty-one".