747666347 has 4 divisors (see below), whose sum is σ = 748184496. Its totient is φ = 747148200.

The previous prime is 747666331. The next prime is 747666379. The reversal of 747666347 is 743666747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743666747 = 919 ⋅809213.

It is a cyclic number.

It is not a de Polignac number, because 747666347 - 2⁴ = 747666331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747666295 and 747666304.

It is not an unprimeable number, because it can be changed into a prime (747666547) 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, 256904 + ... + 259797.

It is an arithmetic number, because the mean of its divisors is an integer number (187046124).

Almost surely, 2^747666347 is an apocalyptic number.

747666347 is a deficient number, since it is larger than the sum of its proper divisors (518149).

747666347 is a wasteful number, since it uses less digits than its factorization.

747666347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518148.

The product of its digits is 3556224, while the sum is 50.

The square root of 747666347 is about 27343.4882010324. The cubic root of 747666347 is about 907.6169775873.

The spelling of 747666347 in words is "seven hundred forty-seven million, six hundred sixty-six thousand, three hundred forty-seven".