747689761 has 8 divisors (see below), whose sum is σ = 920233664. Its totient is φ = 591578640.

The previous prime is 747689759. The next prime is 747689791. The reversal of 747689761 is 167986747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 747689761 - 2¹ = 747689759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (747689741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4108095 + ... + 4108276.

It is an arithmetic number, because the mean of its divisors is an integer number (115029208).

Almost surely, 2^747689761 is an apocalyptic number.

It is an amenable number.

747689761 is a deficient number, since it is larger than the sum of its proper divisors (172543903).

747689761 is a wasteful number, since it uses less digits than its factorization.

747689761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8216391.

The product of its digits is 3556224, while the sum is 55.

The square root of 747689761 is about 27343.9163434940. The cubic root of 747689761 is about 907.6264518321.

The spelling of 747689761 in words is "seven hundred forty-seven million, six hundred eighty-nine thousand, seven hundred sixty-one".