75439616 has 120 divisors (see below), whose sum is σ = 182863296. Its totient is φ = 30965760.

The previous prime is 75439607. The next prime is 75439657. The reversal of 75439616 is 61693457.

It is a super-2 number, since 2×75439616² = 11382271324454912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 777680 + ... + 777776.

Almost surely, 2^75439616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75439616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91431648).

75439616 is an abundant number, since it is smaller than the sum of its proper divisors (107423680).

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

75439616 is an equidigital number, since it uses as much as digits as its factorization.

75439616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 137 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 75439616 is about 8685.5981947129. The cubic root of 75439616 is about 422.5386979482.

The spelling of 75439616 in words is "seventy-five million, four hundred thirty-nine thousand, six hundred sixteen".