106621047 has 12 divisors (see below), whose sum is σ = 165855144. Its totient is φ = 65612880.

The previous prime is 106621019. The next prime is 106621049. The reversal of 106621047 is 740126601.

It is not a de Polignac number, because 106621047 - 2¹⁰ = 106620023 is a prime.

It is a super-2 number, since 2×106621047² = 22736095326752418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106621047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106621049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455529 + ... + 455762.

It is an arithmetic number, because the mean of its divisors is an integer number (13821262).

Almost surely, 2^106621047 is an apocalyptic number.

106621047 is a deficient number, since it is larger than the sum of its proper divisors (59234097).

106621047 is a wasteful number, since it uses less digits than its factorization.

106621047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911310 (or 911307 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 106621047 is about 10325.7468010793. The cubic root of 106621047 is about 474.1848208382.

Adding to 106621047 its reverse (740126601), we get a palindrome (846747648).

The spelling of 106621047 in words is "one hundred six million, six hundred twenty-one thousand, forty-seven".