106621139 has 12 divisors (see below), whose sum is σ = 111648264. Its totient is φ = 101805312.

The previous prime is 106621133. The next prime is 106621147. The reversal of 106621139 is 931126601.

It is not a de Polignac number, because 106621139 - 2²⁰ = 105572563 is a prime.

It is a super-2 number, since 2×106621139² = 22736134563314642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106621133) 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, 80924 + ... + 82230.

It is an arithmetic number, because the mean of its divisors is an integer number (9304022).

Almost surely, 2^106621139 is an apocalyptic number.

106621139 is a deficient number, since it is larger than the sum of its proper divisors (5027125).

106621139 is an equidigital number, since it uses as much as digits as its factorization.

106621139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 106621139 is about 10325.7512559620. The cubic root of 106621139 is about 474.1849572247.

The spelling of 106621139 in words is "one hundred six million, six hundred twenty-one thousand, one hundred thirty-nine".