7644749 has 4 divisors (see below), whose sum is σ = 8736864. Its totient is φ = 6552636.

The previous prime is 7644739. The next prime is 7644797. The reversal of 7644749 is 9474467.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7644749 - 2⁸ = 7644493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7644709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546047 + ... + 546060.

It is an arithmetic number, because the mean of its divisors is an integer number (2184216).

Almost surely, 2^7644749 is an apocalyptic number.

It is an amenable number.

7644749 is a deficient number, since it is larger than the sum of its proper divisors (1092115).

7644749 is a wasteful number, since it uses less digits than its factorization.

7644749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092114.

The product of its digits is 169344, while the sum is 41.

The square root of 7644749 is about 2764.9139227108. The cubic root of 7644749 is about 196.9946402726.

The spelling of 7644749 in words is "seven million, six hundred forty-four thousand, seven hundred forty-nine".