106780861 has 4 divisors (see below), whose sum is σ = 116488224. Its totient is φ = 97073500.

The previous prime is 106780841. The next prime is 106780867. The reversal of 106780861 is 168087601.

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 106780861 - 2¹¹ = 106778813 is a prime.

It is a super-2 number, since 2×106780861² = 22804304551802642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106780861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106780867) 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, 4853665 + ... + 4853686.

It is an arithmetic number, because the mean of its divisors is an integer number (29122056).

Almost surely, 2^106780861 is an apocalyptic number.

106780861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

106780861 is a deficient number, since it is larger than the sum of its proper divisors (9707363).

106780861 is an equidigital number, since it uses as much as digits as its factorization.

106780861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9707362.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 106780861 is about 10333.4825204284. The cubic root of 106780861 is about 474.4216206814.

The spelling of 106780861 in words is "one hundred six million, seven hundred eighty thousand, eight hundred sixty-one".