764751999001 has 9 divisors (see below), whose sum is σ = 768175127701. Its totient is φ = 761344068604.

The previous prime is 764751998981. The next prime is 764751999031. The reversal of 764751999001 is 100999157467.

The square root of 764751999001 is 874501.

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

It is not a de Polignac number, because 764751999001 - 2¹³ = 764751990809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764751999031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 209003910 + ... + 209007568.

Almost surely, 2^764751999001 is an apocalyptic number.

764751999001 is the 874501-st square number.

764751999001 is the 437251-st centered octagonal number.

It is an amenable number.

764751999001 is a deficient number, since it is larger than the sum of its proper divisors (3423128700).

764751999001 is an frugal number, since it uses more digits than its factorization.

764751999001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796 (or 3898 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 58.

The spelling of 764751999001 in words is "seven hundred sixty-four billion, seven hundred fifty-one million, nine hundred ninety-nine thousand, one".