7173604640 has 48 divisors (see below), whose sum is σ = 16955899128. Its totient is φ = 2868043776.

The previous prime is 7173604591. The next prime is 7173604657. The reversal of 7173604640 is 464063717.

It can be written as a sum of positive squares in 4 ways, for example, as 6182362384 + 991242256 = 78628^2 + 31484^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7173604594 and 7173604603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357104 + ... + 376656.

Almost surely, 2^7173604640 is an apocalyptic number.

It is an amenable number.

7173604640 is an abundant number, since it is smaller than the sum of its proper divisors (9782294488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7173604640 is a wasteful number, since it uses less digits than its factorization.

7173604640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21861 (or 21853 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 7173604640 is about 84697.1347803454. The cubic root of 7173604640 is about 1928.6162094299.

The spelling of 7173604640 in words is "seven billion, one hundred seventy-three million, six hundred four thousand, six hundred forty".