747319661 has 16 divisors (see below), whose sum is σ = 835980288. Its totient is φ = 662180400.

The previous prime is 747319637. The next prime is 747319667. The reversal of 747319661 is 166913747.

747319661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-747319661 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747319667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268700 + ... + 271466.

It is an arithmetic number, because the mean of its divisors is an integer number (52248768).

Almost surely, 2^747319661 is an apocalyptic number.

It is an amenable number.

747319661 is a deficient number, since it is larger than the sum of its proper divisors (88660627).

747319661 is a wasteful number, since it uses less digits than its factorization.

747319661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392.

The product of its digits is 190512, while the sum is 44.

The square root of 747319661 is about 27337.1480041353. The cubic root of 747319661 is about 907.4766713540.

The spelling of 747319661 in words is "seven hundred forty-seven million, three hundred nineteen thousand, six hundred sixty-one".