106577781 has 4 divisors (see below), whose sum is σ = 142103712. Its totient is φ = 71051852.

The previous prime is 106577761. The next prime is 106577789. The reversal of 106577781 is 187775601.

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.

It is a cyclic number.

It is not a de Polignac number, because 106577781 - 2⁵ = 106577749 is a prime.

It is a super-2 number, since 2×106577781² = 22717646805767922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106577789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17762961 + ... + 17762966.

It is an arithmetic number, because the mean of its divisors is an integer number (35525928).

Almost surely, 2^106577781 is an apocalyptic number.

It is an amenable number.

106577781 is a deficient number, since it is larger than the sum of its proper divisors (35525931).

106577781 is an equidigital number, since it uses as much as digits as its factorization.

106577781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35525930.

The product of its (nonzero) digits is 82320, while the sum is 42.

The square root of 106577781 is about 10323.6515342199. The cubic root of 106577781 is about 474.1206719772.

The spelling of 106577781 in words is "one hundred six million, five hundred seventy-seven thousand, seven hundred eighty-one".