75539723 has 12 divisors (see below), whose sum is σ = 88173072. Its totient is φ = 64527120.

The previous prime is 75539719. The next prime is 75539731. The reversal of 75539723 is 32793557.

It is not a de Polignac number, because 75539723 - 2² = 75539719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75539323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12761 + ... + 17717.

It is an arithmetic number, because the mean of its divisors is an integer number (7347756).

Almost surely, 2^75539723 is an apocalyptic number.

75539723 is a deficient number, since it is larger than the sum of its proper divisors (12633349).

75539723 is a wasteful number, since it uses less digits than its factorization.

75539723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282 (or 5275 counting only the distinct ones).

The product of its digits is 198450, while the sum is 41.

The square root of 75539723 is about 8691.3590997036. The cubic root of 75539723 is about 422.7255157300.

The spelling of 75539723 in words is "seventy-five million, five hundred thirty-nine thousand, seven hundred twenty-three".