10506819 has 4 divisors (see below), whose sum is σ = 14009096. Its totient is φ = 7004544.

The previous prime is 10506767. The next prime is 10506841. The reversal of 10506819 is 91860501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10506819 - 2¹⁶ = 10441283 is a prime.

It is a super-2 number, since 2×10506819² = 220786490997522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10506889) 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, 1751134 + ... + 1751139.

It is an arithmetic number, because the mean of its divisors is an integer number (3502274).

Almost surely, 2^10506819 is an apocalyptic number.

10506819 is a deficient number, since it is larger than the sum of its proper divisors (3502277).

10506819 is an equidigital number, since it uses as much as digits as its factorization.

10506819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502276.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 10506819 is about 3241.4223729715. The cubic root of 10506819 is about 219.0233498174.

It can be divided in two parts, 10506 and 819, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 10506819 in words is "ten million, five hundred six thousand, eight hundred nineteen".