109560621 has 4 divisors (see below), whose sum is σ = 146080832. Its totient is φ = 73040412.

The previous prime is 109560601. The next prime is 109560623. The reversal of 109560621 is 126065901.

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 not a de Polignac number, because 109560621 - 2⁶ = 109560557 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 (109560623) 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, 18260101 + ... + 18260106.

It is an arithmetic number, because the mean of its divisors is an integer number (36520208).

Almost surely, 2^109560621 is an apocalyptic number.

It is an amenable number.

109560621 is a deficient number, since it is larger than the sum of its proper divisors (36520211).

109560621 is an equidigital number, since it uses as much as digits as its factorization.

109560621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36520210.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 109560621 is about 10467.1209508632. The cubic root of 109560621 is about 478.5031800883.

It can be divided in two parts, 1095 and 60621, that added together give a palindrome (61716).

The spelling of 109560621 in words is "one hundred nine million, five hundred sixty thousand, six hundred twenty-one".