106157785 has 4 divisors (see below), whose sum is σ = 127389348. Its totient is φ = 84926224.

The previous prime is 106157771. The next prime is 106157801. The reversal of 106157785 is 587751601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 587751601 = 367 ⋅1601503.

It can be written as a sum of positive squares in 2 ways, for example, as 29909961 + 76247824 = 5469^2 + 8732^2 .

It is a cyclic number.

It is not a de Polignac number, because 106157785 - 2⁹ = 106157273 is a prime.

It is a super-2 number, since 2×106157785² = 22538950632212450, 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, 10615774 + ... + 10615783.

It is an arithmetic number, because the mean of its divisors is an integer number (31847337).

Almost surely, 2^106157785 is an apocalyptic number.

It is an amenable number.

106157785 is a deficient number, since it is larger than the sum of its proper divisors (21231563).

106157785 is an equidigital number, since it uses as much as digits as its factorization.

106157785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21231562.

The product of its (nonzero) digits is 58800, while the sum is 40.

The square root of 106157785 is about 10303.2900085361. The cubic root of 106157785 is about 473.4970556535.

The spelling of 106157785 in words is "one hundred six million, one hundred fifty-seven thousand, seven hundred eighty-five".