761664513 has 8 divisors (see below), whose sum is σ = 1048312576. Its totient is φ = 491396400.

The previous prime is 761664479. The next prime is 761664557. The reversal of 761664513 is 315466167.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 761664513 - 2¹⁰ = 761663489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761664713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4094878 + ... + 4095063.

It is an arithmetic number, because the mean of its divisors is an integer number (131039072).

Almost surely, 2^761664513 is an apocalyptic number.

It is an amenable number.

761664513 is a deficient number, since it is larger than the sum of its proper divisors (286648063).

761664513 is a wasteful number, since it uses less digits than its factorization.

761664513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8189975.

The product of its digits is 90720, while the sum is 39.

The square root of 761664513 is about 27598.2701088311. The cubic root of 761664513 is about 913.2462703017.

The spelling of 761664513 in words is "seven hundred sixty-one million, six hundred sixty-four thousand, five hundred thirteen".