7564642 has 8 divisors (see below), whose sum is σ = 11464236. Its totient is φ = 3743232.

The previous prime is 7564619. The next prime is 7564649. The reversal of 7564642 is 2464657.

It can be written as a sum of positive squares in 2 ways, for example, as 7403841 + 160801 = 2721^2 + 401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7564598 and 7564607.

It is not an unprimeable number, because it can be changed into a prime (7564649) 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 3 ways as a sum of consecutive naturals, for example, 19303 + ... + 19690.

Almost surely, 2^7564642 is an apocalyptic number.

7564642 is a deficient number, since it is larger than the sum of its proper divisors (3899594).

7564642 is a wasteful number, since it uses less digits than its factorization.

7564642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39092.

The product of its digits is 40320, while the sum is 34.

The square root of 7564642 is about 2750.3894269721. The cubic root of 7564642 is about 196.3041404712.

The spelling of 7564642 in words is "seven million, five hundred sixty-four thousand, six hundred forty-two".