7649739 has 12 divisors (see below), whose sum is σ = 11319672. Its totient is φ = 4975200.

The previous prime is 7649737. The next prime is 7649749. The reversal of 7649739 is 9379467.

It is not a de Polignac number, because 7649739 - 2¹ = 7649737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7649694 and 7649703.

It is not an unprimeable number, because it can be changed into a prime (7649737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9997 + ... + 10734.

It is an arithmetic number, because the mean of its divisors is an integer number (943306).

Almost surely, 2^7649739 is an apocalyptic number.

7649739 is a deficient number, since it is larger than the sum of its proper divisors (3669933).

7649739 is a wasteful number, since it uses less digits than its factorization.

7649739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20778 (or 20775 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 7649739 is about 2765.8161544108. The cubic root of 7649739 is about 197.0374927566.

The spelling of 7649739 in words is "seven million, six hundred forty-nine thousand, seven hundred thirty-nine".