747646 has 4 divisors (see below), whose sum is σ = 1121472. Its totient is φ = 373822.

The previous prime is 747619. The next prime is 747647. The reversal of 747646 is 646747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646747 = 131 ⋅4937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747647) by changing a digit.

747646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186910 + ... + 186913.

It is an arithmetic number, because the mean of its divisors is an integer number (280368).

2⁷⁴⁷⁶⁴⁶ is an apocalyptic number.

747646 is a deficient number, since it is larger than the sum of its proper divisors (373826).

747646 is a wasteful number, since it uses less digits than its factorization.

747646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373825.

The product of its digits is 28224, while the sum is 34.

The square root of 747646 is about 864.6652531471. The cubic root of 747646 is about 90.7608744213.

The spelling of 747646 in words is "seven hundred forty-seven thousand, six hundred forty-six".