72587017 has 4 divisors (see below), whose sum is σ = 73505920. Its totient is φ = 71668116.

The previous prime is 72587003. The next prime is 72587023. The reversal of 72587017 is 71078527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72587017 - 2¹¹ = 72584969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72587117) 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, 459333 + ... + 459490.

It is an arithmetic number, because the mean of its divisors is an integer number (18376480).

Almost surely, 2^72587017 is an apocalyptic number.

It is an amenable number.

72587017 is a deficient number, since it is larger than the sum of its proper divisors (918903).

72587017 is an equidigital number, since it uses as much as digits as its factorization.

72587017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918902.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 72587017 is about 8519.8014648230. The cubic root of 72587017 is about 417.1443026818.

The spelling of 72587017 in words is "seventy-two million, five hundred eighty-seven thousand, seventeen".