747721367 has 4 divisors (see below), whose sum is σ = 765110280. Its totient is φ = 730332456.

The previous prime is 747721363. The next prime is 747721399. The reversal of 747721367 is 763127747.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 763127747 = 17137 ⋅44531.

It is a cyclic number.

It is not a de Polignac number, because 747721367 - 2² = 747721363 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 (747721363) 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, 8694392 + ... + 8694477.

It is an arithmetic number, because the mean of its divisors is an integer number (191277570).

Almost surely, 2^747721367 is an apocalyptic number.

747721367 is a deficient number, since it is larger than the sum of its proper divisors (17388913).

747721367 is a wasteful number, since it uses less digits than its factorization.

747721367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17388912.

The product of its digits is 345744, while the sum is 44.

The square root of 747721367 is about 27344.4942721565. The cubic root of 747721367 is about 907.6392405755.

The spelling of 747721367 in words is "seven hundred forty-seven million, seven hundred twenty-one thousand, three hundred sixty-seven".