7499408564 has 24 divisors (see below), whose sum is σ = 13664474376. Its totient is φ = 3598272000.

The previous prime is 7499408563. The next prime is 7499408573. The reversal of 7499408564 is 4658049947.

It can be written as a sum of positive squares in 4 ways, for example, as 1335902500 + 6163506064 = 36550^2 + 78508^2 .

It is a super-2 number, since 2×7499408564² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7499408563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364817 + ... + 384824.

It is an arithmetic number, because the mean of its divisors is an integer number (569353099).

Almost surely, 2^7499408564 is an apocalyptic number.

It is an amenable number.

7499408564 is a deficient number, since it is larger than the sum of its proper divisors (6165065812).

7499408564 is a wasteful number, since it uses less digits than its factorization.

7499408564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749747 (or 749745 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The square root of 7499408564 is about 86599.1256537847. The cubic root of 7499408564 is about 1957.3823660395.

The spelling of 7499408564 in words is "seven billion, four hundred ninety-nine million, four hundred eight thousand, five hundred sixty-four".