74995465609 has 27 divisors (see below), whose sum is σ = 81019256511. Its totient is φ = 69405304320.

The previous prime is 74995465607. The next prime is 74995465621. The reversal of 74995465609 is 90656459947.

It is a happy number.

The square root of 74995465609 is 273853.

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

It can be written as a sum of positive squares in 13 ways, for example, as 74640972025 + 354493584 = 273205^2 + 18828^2 .

It is not a de Polignac number, because 74995465609 - 2¹ = 74995465607 is a prime.

It is a super-3 number, since 3×74995465609³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74995465607) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 414339499 + ... + 414339679.

Almost surely, 2^74995465609 is an apocalyptic number.

74995465609 is the 273853-rd square number.

74995465609 is the 136927-th centered octagonal number.

It is an amenable number.

74995465609 is a deficient number, since it is larger than the sum of its proper divisors (6023790902).

74995465609 is an frugal number, since it uses more digits than its factorization.

74995465609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 64.

Multiplying 74995465609 by its sum of digits (64), we get a square (4799709798976 = 2190824²).

The spelling of 74995465609 in words is "seventy-four billion, nine hundred ninety-five million, four hundred sixty-five thousand, six hundred nine".