75597985 has 4 divisors (see below), whose sum is σ = 90717588. Its totient is φ = 60478384.

The previous prime is 75597967. The next prime is 75597989. The reversal of 75597985 is 58979557.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21678336 + 53919649 = 4656^2 + 7343^2 .

It is a cyclic number.

It is not a de Polignac number, because 75597985 - 2¹³ = 75589793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75597989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7559794 + ... + 7559803.

It is an arithmetic number, because the mean of its divisors is an integer number (22679397).

Almost surely, 2^75597985 is an apocalyptic number.

It is an amenable number.

75597985 is a deficient number, since it is larger than the sum of its proper divisors (15119603).

75597985 is a wasteful number, since it uses less digits than its factorization.

75597985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15119602.

The product of its digits is 3969000, while the sum is 55.

The square root of 75597985 is about 8694.7101734330. The cubic root of 75597985 is about 422.8341671956.

The spelling of 75597985 in words is "seventy-five million, five hundred ninety-seven thousand, nine hundred eighty-five".