76017985 has 4 divisors (see below), whose sum is σ = 91221588. Its totient is φ = 60814384.

The previous prime is 76017979. The next prime is 76017989. The reversal of 76017985 is 58971067.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58971067 = 181 ⋅325807.

It can be written as a sum of positive squares in 2 ways, for example, as 20007729 + 56010256 = 4473^2 + 7484^2 .

It is a cyclic number.

It is not a de Polignac number, because 76017985 - 2⁷ = 76017857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76017989) 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, 7601794 + ... + 7601803.

It is an arithmetic number, because the mean of its divisors is an integer number (22805397).

Almost surely, 2^76017985 is an apocalyptic number.

It is an amenable number.

76017985 is a deficient number, since it is larger than the sum of its proper divisors (15203603).

76017985 is a wasteful number, since it uses less digits than its factorization.

76017985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15203602.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 76017985 is about 8718.8293365566. The cubic root of 76017985 is about 423.6157686354.

The spelling of 76017985 in words is "seventy-six million, seventeen thousand, nine hundred eighty-five".