34645561 has 4 divisors (see below), whose sum is σ = 34704000. Its totient is φ = 34587124.

The previous prime is 34645553. The next prime is 34645571. The reversal of 34645561 is 16554643.

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 34645561 - 2³ = 34645553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34645571) 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, 28321 + ... + 29518.

It is an arithmetic number, because the mean of its divisors is an integer number (8676000).

Almost surely, 2^34645561 is an apocalyptic number.

It is an amenable number.

34645561 is a deficient number, since it is larger than the sum of its proper divisors (58439).

34645561 is an equidigital number, since it uses as much as digits as its factorization.

34645561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58438.

The product of its digits is 43200, while the sum is 34.

The square root of 34645561 is about 5886.0479950473. The cubic root of 34645561 is about 325.9986983525.

It can be divided in two parts, 3464 and 5561, that added together give a square (9025 = 95²).

The spelling of 34645561 in words is "thirty-four million, six hundred forty-five thousand, five hundred sixty-one".