538860785 has 8 divisors (see below), whose sum is σ = 664109736. Its totient is φ = 419437440.

The previous prime is 538860779. The next prime is 538860787. The reversal of 538860785 is 587068835.

It can be written as a sum of positive squares in 4 ways, for example, as 181953121 + 356907664 = 13489^2 + 18892^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 538860785 - 2⁴ = 538860769 is a prime.

It is a super-2 number, since 2×538860785² = 580741891221632450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (538860787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456196 + ... + 1456565.

It is an arithmetic number, because the mean of its divisors is an integer number (83013717).

Almost surely, 2^538860785 is an apocalyptic number.

It is an amenable number.

538860785 is a deficient number, since it is larger than the sum of its proper divisors (125248951).

538860785 is a wasteful number, since it uses less digits than its factorization.

538860785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912803.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The square root of 538860785 is about 23213.3751315917. The cubic root of 538860785 is about 813.7522326848.

The spelling of 538860785 in words is "five hundred thirty-eight million, eight hundred sixty thousand, seven hundred eighty-five".