746064561665 has 4 divisors (see below), whose sum is σ = 895277474004. Its totient is φ = 596851649328.

The previous prime is 746064561659. The next prime is 746064561703. The reversal of 746064561665 is 566165460647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566165460647 = 37967 ⋅14912041.

It can be written as a sum of positive squares in 2 ways, for example, as 581839430656 + 164225131009 = 762784^2 + 405247^2 .

It is a cyclic number.

It is not a de Polignac number, because 746064561665 - 2²⁶ = 745997452801 is a prime.

It is a super-2 number, since 2×746064561665² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 746064561665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74606456162 + ... + 74606456171.

It is an arithmetic number, because the mean of its divisors is an integer number (223819368501).

Almost surely, 2^746064561665 is an apocalyptic number.

It is an amenable number.

746064561665 is a deficient number, since it is larger than the sum of its proper divisors (149212912339).

746064561665 is a wasteful number, since it uses less digits than its factorization.

746064561665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149212912338.

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 746064561665 in words is "seven hundred forty-six billion, sixty-four million, five hundred sixty-one thousand, six hundred sixty-five".