75556730 has 32 divisors (see below), whose sum is σ = 146223360. Its totient is φ = 28019520.

The previous prime is 75556693. The next prime is 75556753. The reversal of 75556730 is 3765557.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 15 ways as a sum of consecutive naturals, for example, 4700 + ... + 13160.

It is an arithmetic number, because the mean of its divisors is an integer number (4569480).

Almost surely, 2^75556730 is an apocalyptic number.

75556730 is a deficient number, since it is larger than the sum of its proper divisors (70666630).

75556730 is a wasteful number, since it uses less digits than its factorization.

75556730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534.

The product of its (nonzero) digits is 110250, while the sum is 38.

The square root of 75556730 is about 8692.3374301738. The cubic root of 75556730 is about 422.7572374657.

The spelling of 75556730 in words is "seventy-five million, five hundred fifty-six thousand, seven hundred thirty".