108670621 has 2 divisors, whose sum is σ = 108670622. Its totient is φ = 108670620.

The previous prime is 108670609. The next prime is 108670649. The reversal of 108670621 is 126076801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101727396 + 6943225 = 10086^2 + 2635^2 .

It is an emirp because it is prime and its reverse (126076801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108670621 - 2¹⁵ = 108637853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108670421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54335310 + 54335311.

It is an arithmetic number, because the mean of its divisors is an integer number (54335311).

Almost surely, 2^108670621 is an apocalyptic number.

It is an amenable number.

108670621 is a deficient number, since it is larger than the sum of its proper divisors (1).

108670621 is an equidigital number, since it uses as much as digits as its factorization.

108670621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 108670621 is about 10424.5201808045. The cubic root of 108670621 is about 477.2039717362.

The spelling of 108670621 in words is "one hundred eight million, six hundred seventy thousand, six hundred twenty-one".