764647062481 has 9 divisors (see below), whose sum is σ = 769877429769. Its totient is φ = 759452008500.

The previous prime is 764647062433. The next prime is 764647062533. The reversal of 764647062481 is 184260746467.

The square root of 764647062481 is 874441.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 764647062481 - 2⁷ = 764647062353 is a prime.

It is a super-3 number, since 3×764647062481³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764647092481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 132037696 + ... + 132043486.

It is an arithmetic number, because the mean of its divisors is an integer number (85541936641).

Almost surely, 2^764647062481 is an apocalyptic number.

764647062481 is the 874441-st square number.

764647062481 is the 437221-st centered octagonal number.

It is an amenable number.

764647062481 is a deficient number, since it is larger than the sum of its proper divisors (5230367288).

764647062481 is an frugal number, since it uses more digits than its factorization.

764647062481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11884 (or 5942 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 764647062481 in words is "seven hundred sixty-four billion, six hundred forty-seven million, sixty-two thousand, four hundred eighty-one".