106493621 has 4 divisors (see below), whose sum is σ = 114685452. Its totient is φ = 98301792.

The previous prime is 106493609. The next prime is 106493633. The reversal of 106493621 is 126394601.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (106493609) and next prime (106493633).

It can be written as a sum of positive squares in 2 ways, for example, as 5712100 + 100781521 = 2390^2 + 10039^2 .

It is a cyclic number.

It is not a de Polignac number, because 106493621 - 2¹⁰ = 106492597 is a prime.

It is a super-2 number, since 2×106493621² = 22681782627383282, 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 (106493521) 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, 4095896 + ... + 4095921.

It is an arithmetic number, because the mean of its divisors is an integer number (28671363).

Almost surely, 2^106493621 is an apocalyptic number.

It is an amenable number.

106493621 is a deficient number, since it is larger than the sum of its proper divisors (8191831).

106493621 is an equidigital number, since it uses as much as digits as its factorization.

106493621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191830.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 106493621 is about 10319.5746520872. The cubic root of 106493621 is about 473.9958413826.

The spelling of 106493621 in words is "one hundred six million, four hundred ninety-three thousand, six hundred twenty-one".