7646971409 has 48 divisors (see below), whose sum is σ = 9932883840. Its totient is φ = 5819869440.

The previous prime is 7646971379. The next prime is 7646971463. The reversal of 7646971409 is 9041796467.

It is a happy number.

7646971409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7646971409 - 2⁸ = 7646971153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7646971499) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4287932 + ... + 4289714.

It is an arithmetic number, because the mean of its divisors is an integer number (206935080).

Almost surely, 2^7646971409 is an apocalyptic number.

It is an amenable number.

7646971409 is a deficient number, since it is larger than the sum of its proper divisors (2285912431).

7646971409 is a wasteful number, since it uses less digits than its factorization.

7646971409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 7646971409 is about 87446.9634063985. The cubic root of 7646971409 is about 1970.1372789491.

The spelling of 7646971409 in words is "seven billion, six hundred forty-six million, nine hundred seventy-one thousand, four hundred nine".