75420587 has 8 divisors (see below), whose sum is σ = 82363440. Its totient is φ = 68492160.

The previous prime is 75420547. The next prime is 75420593. The reversal of 75420587 is 78502457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75420587 - 2¹⁰ = 75419563 is a prime.

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 75420587.

It is not an unprimeable number, because it can be changed into a prime (75420547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9383 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (10295430).

Almost surely, 2^75420587 is an apocalyptic number.

75420587 is a deficient number, since it is larger than the sum of its proper divisors (6942853).

75420587 is a wasteful number, since it uses less digits than its factorization.

75420587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 75420587 is about 8684.5026915765. The cubic root of 75420587 is about 422.5031676991.

The spelling of 75420587 in words is "seventy-five million, four hundred twenty thousand, five hundred eighty-seven".