7642479 has 16 divisors (see below), whose sum is σ = 11067392. Its totient is φ = 4663008.

The previous prime is 7642403. The next prime is 7642487. The reversal of 7642479 is 9742467.

It is not a de Polignac number, because 7642479 - 2⁹ = 7641967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7642499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4182 + ... + 5724.

It is an arithmetic number, because the mean of its divisors is an integer number (691712).

Almost surely, 2^7642479 is an apocalyptic number.

7642479 is a deficient number, since it is larger than the sum of its proper divisors (3424913).

7642479 is a wasteful number, since it uses less digits than its factorization.

7642479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686.

The product of its digits is 84672, while the sum is 39.

The square root of 7642479 is about 2764.5033912079. The cubic root of 7642479 is about 196.9751400858.

The spelling of 7642479 in words is "seven million, six hundred forty-two thousand, four hundred seventy-nine".