747644651 has 16 divisors (see below), whose sum is σ = 827441664. Its totient is φ = 671216544.

The previous prime is 747644629. The next prime is 747644663. The reversal of 747644651 is 156446747.

It is a cyclic number.

It is not a de Polignac number, because 747644651 - 2¹⁰ = 747643627 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 Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747644351) 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, 95840 + ... + 103346.

It is an arithmetic number, because the mean of its divisors is an integer number (51715104).

Almost surely, 2^747644651 is an apocalyptic number.

747644651 is a deficient number, since it is larger than the sum of its proper divisors (79797013).

747644651 is a wasteful number, since it uses less digits than its factorization.

747644651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730.

The product of its digits is 564480, while the sum is 44.

The square root of 747644651 is about 27343.0914674987. The cubic root of 747644651 is about 907.6081983377.

The spelling of 747644651 in words is "seven hundred forty-seven million, six hundred forty-four thousand, six hundred fifty-one".