749647 has 4 divisors (see below), whose sum is σ = 758160. Its totient is φ = 741136.

The previous prime is 749641. The next prime is 749653. The reversal of 749647 is 746947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746947 = 19 ⋅39313.

It is an interprime number because it is at equal distance from previous prime (749641) and next prime (749653).

It is a cyclic number.

It is not a de Polignac number, because 749647 - 2¹¹ = 747599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4123 + ... + 4300.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

2⁷⁴⁹⁶⁴⁷ is an apocalyptic number.

749647 is a deficient number, since it is larger than the sum of its proper divisors (8513).

749647 is an equidigital number, since it uses as much as digits as its factorization.

749647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8512.

The product of its digits is 42336, while the sum is 37.

The square root of 749647 is about 865.8215751528. The cubic root of 749647 is about 90.8417731031.

The spelling of 749647 in words is "seven hundred forty-nine thousand, six hundred forty-seven".