34620561 has 16 divisors (see below), whose sum is σ = 51822400. Its totient is φ = 22840704.

The previous prime is 34620557. The next prime is 34620563. The reversal of 34620561 is 16502643.

34620561 is a `hidden beast` number, since 34 + 620 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 34620561 - 2² = 34620557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34620563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3991 + ... + 9228.

It is an arithmetic number, because the mean of its divisors is an integer number (3238900).

Almost surely, 2^34620561 is an apocalyptic number.

It is an amenable number.

34620561 is a deficient number, since it is larger than the sum of its proper divisors (17201839).

34620561 is a wasteful number, since it uses less digits than its factorization.

34620561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13325 (or 13319 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 34620561 is about 5883.9239458035. The cubic root of 34620561 is about 325.9202666735.

The spelling of 34620561 in words is "thirty-four million, six hundred twenty thousand, five hundred sixty-one".