106072621 has 4 divisors (see below), whose sum is σ = 106357372. Its totient is φ = 105787872.

The previous prime is 106072613. The next prime is 106072657. The reversal of 106072621 is 126270601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76370121 + 29702500 = 8739^2 + 5450^2 .

It is a cyclic number.

It is not a de Polignac number, because 106072621 - 2³ = 106072613 is a prime.

It is a super-2 number, since 2×106072621² = 22502801851619282, 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 (106072601) 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, 141816 + ... + 142561.

It is an arithmetic number, because the mean of its divisors is an integer number (26589343).

Almost surely, 2^106072621 is an apocalyptic number.

It is an amenable number.

106072621 is a deficient number, since it is larger than the sum of its proper divisors (284751).

106072621 is an equidigital number, since it uses as much as digits as its factorization.

106072621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284750.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 106072621 is about 10299.1563246705. The cubic root of 106072621 is about 473.3704023846.

The spelling of 106072621 in words is "one hundred six million, seventy-two thousand, six hundred twenty-one".