7723642 has 4 divisors (see below), whose sum is σ = 11585466. Its totient is φ = 3861820.

The previous prime is 7723613. The next prime is 7723643. The reversal of 7723642 is 2463277.

It is a happy number.

7723642 is nontrivially palindromic in base 3 and base 6.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2463277 = 23 ⋅107099.

It can be written as a sum of positive squares in only one way, i.e., 6765201 + 958441 = 2601^2 + 979^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7723643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930909 + ... + 1930912.

Almost surely, 2^7723642 is an apocalyptic number.

7723642 is a deficient number, since it is larger than the sum of its proper divisors (3861824).

7723642 is a wasteful number, since it uses less digits than its factorization.

7723642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861823.

The product of its digits is 14112, while the sum is 31.

The square root of 7723642 is about 2779.1441128520. The cubic root of 7723642 is about 197.6699770461.

The spelling of 7723642 in words is "seven million, seven hundred twenty-three thousand, six hundred forty-two".