106777505 has 4 divisors (see below), whose sum is σ = 128133012. Its totient is φ = 85422000.

The previous prime is 106777487. The next prime is 106777513. The reversal of 106777505 is 505777601.

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 21418384 + 85359121 = 4628^2 + 9239^2 .

It is not a de Polignac number, because 106777505 - 2⁶ = 106777441 is a prime.

It is a super-2 number, since 2×106777505² = 22802871148050050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10677746 + ... + 10677755.

It is an arithmetic number, because the mean of its divisors is an integer number (32033253).

Almost surely, 2^106777505 is an apocalyptic number.

It is an amenable number.

106777505 is a deficient number, since it is larger than the sum of its proper divisors (21355507).

106777505 is an equidigital number, since it uses as much as digits as its factorization.

106777505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21355506.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 106777505 is about 10333.3201344002. The cubic root of 106777505 is about 474.4166504535.

The spelling of 106777505 in words is "one hundred six million, seven hundred seventy-seven thousand, five hundred five".