830224781 has 4 divisors (see below), whose sum is σ = 836762112. Its totient is φ = 823687452.

The previous prime is 830224757. The next prime is 830224849. The reversal of 830224781 is 187422038.

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 830224781 - 2¹⁴ = 830208397 is a prime.

It is a super-2 number, since 2×830224781² = 1378546373972995922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830224081) 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, 3268475 + ... + 3268728.

It is an arithmetic number, because the mean of its divisors is an integer number (209190528).

Almost surely, 2^830224781 is an apocalyptic number.

It is an amenable number.

830224781 is a deficient number, since it is larger than the sum of its proper divisors (6537331).

830224781 is a wasteful number, since it uses less digits than its factorization.

830224781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6537330.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 830224781 is about 28813.6214488911. The cubic root of 830224781 is about 939.8644670293.

The spelling of 830224781 in words is "eight hundred thirty million, two hundred twenty-four thousand, seven hundred eighty-one".