7664660271 has 6 divisors (see below), whose sum is σ = 11071175960. Its totient is φ = 5109773508.

The previous prime is 7664660207. The next prime is 7664660291. The reversal of 7664660271 is 1720664667.

It is a happy number.

It is not a de Polignac number, because 7664660271 - 2⁶ = 7664660207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664660291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425814451 + ... + 425814468.

Almost surely, 2^7664660271 is an apocalyptic number.

7664660271 is a deficient number, since it is larger than the sum of its proper divisors (3406515689).

7664660271 is a wasteful number, since it uses less digits than its factorization.

7664660271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851628925 (or 851628922 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 7664660271 is about 87548.0455007420. The cubic root of 7664660271 is about 1971.6552066775.

The spelling of 7664660271 in words is "seven billion, six hundred sixty-four million, six hundred sixty thousand, two hundred seventy-one".