746686647 has 32 divisors (see below), whose sum is σ = 1290048000. Its totient is φ = 426672792.

The previous prime is 746686639. The next prime is 746686649.

It is a happy number.

746686647 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 746686647 - 2³ = 746686639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 746686593 and 746686602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746686649) 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 31 ways as a sum of consecutive naturals, for example, 31053 + ... + 49574.

It is an arithmetic number, because the mean of its divisors is an integer number (40314000).

Almost surely, 2^746686647 is an apocalyptic number.

746686647 is a deficient number, since it is larger than the sum of its proper divisors (543361353).

746686647 is an equidigital number, since it uses as much as digits as its factorization.

746686647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80657 (or 80637 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The square root of 746686647 is about 27325.5676427773. The cubic root of 746686647 is about 907.2203741995.

The spelling of 746686647 in words is "seven hundred forty-six million, six hundred eighty-six thousand, six hundred forty-seven".