75604986 has 48 divisors (see below), whose sum is σ = 171088008. Its totient is φ = 24105600.

The previous prime is 75604981. The next prime is 75605027. The reversal of 75604986 is 68940657.

75604986 is a `hidden beast` number, since 7 + 560 + 4 + 9 + 86 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 33419961 + 42185025 = 5781^2 + 6495^2 .

It is a super-2 number, since 2×75604986² = 11432227816120392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75604981) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 39696 + ... + 41556.

Almost surely, 2^75604986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75604986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85544004).

75604986 is an abundant number, since it is smaller than the sum of its proper divisors (95483022).

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

75604986 is a wasteful number, since it uses less digits than its factorization.

75604986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967 (or 1964 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 75604986 is about 8695.1127652262. The cubic root of 75604986 is about 422.8472194422.

The spelling of 75604986 in words is "seventy-five million, six hundred four thousand, nine hundred eighty-six".