8357642 has 16 divisors (see below), whose sum is σ = 13328712. Its totient is φ = 3916800.

The previous prime is 8357641. The next prime is 8357651. The reversal of 8357642 is 2467538.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7778521 + 579121 = 2789^2 + 761^2 .

It is not an unprimeable number, because it can be changed into a prime (8357641) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 13328 + ... + 13940.

Almost surely, 2^8357642 is an apocalyptic number.

8357642 is a deficient number, since it is larger than the sum of its proper divisors (4971070).

8357642 is a wasteful number, since it uses less digits than its factorization.

8357642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its digits is 40320, while the sum is 35.

The square root of 8357642 is about 2890.9586645264. The cubic root of 8357642 is about 202.9370087748.

The spelling of 8357642 in words is "eight million, three hundred fifty-seven thousand, six hundred forty-two".