615422 has 4 divisors (see below), whose sum is σ = 923136. Its totient is φ = 307710.

The previous prime is 615413. The next prime is 615427. The reversal of 615422 is 224516.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 615394 and 615403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615427) by changing a digit.

615422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153854 + ... + 153857.

It is an arithmetic number, because the mean of its divisors is an integer number (230784).

2⁶¹⁵⁴²² is an apocalyptic number.

615422 is a deficient number, since it is larger than the sum of its proper divisors (307714).

615422 is a wasteful number, since it uses less digits than its factorization.

615422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307713.

The product of its digits is 480, while the sum is 20.

The square root of 615422 is about 784.4883683013. The cubic root of 615422 is about 85.0597964477.

Adding to 615422 its reverse (224516), we get a palindrome (839938).

The spelling of 615422 in words is "six hundred fifteen thousand, four hundred twenty-two".