106630621 has 4 divisors (see below), whose sum is σ = 106651872. Its totient is φ = 106609372.

The previous prime is 106630571. The next prime is 106630631. The reversal of 106630621 is 126036601.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126036601 = 443 ⋅284507.

It is a cyclic number.

It is not a de Polignac number, because 106630621 - 2²¹ = 104533469 is a prime.

It is a super-2 number, since 2×106630621² = 22740178669691282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106630631) 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, 1560 + ... + 14686.

It is an arithmetic number, because the mean of its divisors is an integer number (26662968).

Almost surely, 2^106630621 is an apocalyptic number.

It is an amenable number.

106630621 is a deficient number, since it is larger than the sum of its proper divisors (21251).

106630621 is an equidigital number, since it uses as much as digits as its factorization.

106630621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 106630621 is about 10326.2103891021. The cubic root of 106630621 is about 474.1990135007.

The spelling of 106630621 in words is "one hundred six million, six hundred thirty thousand, six hundred twenty-one".