538690 has 16 divisors (see below), whose sum is σ = 980928. Its totient is φ = 212976.

The previous prime is 538651. The next prime is 538697. The reversal of 538690 is 96835.

It is a super-2 number, since 2×538690² = 580373832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (538697) 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, 769 + ... + 1291.

It is an arithmetic number, because the mean of its divisors is an integer number (61308).

2⁵³⁸⁶⁹⁰ is an apocalyptic number.

538690 is a deficient number, since it is larger than the sum of its proper divisors (442238).

538690 is a wasteful number, since it uses less digits than its factorization.

538690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 538690 is about 733.9550394949. The cubic root of 538690 is about 81.3666254164.

It can be divided in two parts, 5386 and 90, that added together give a square (5476 = 74²).

The spelling of 538690 in words is "five hundred thirty-eight thousand, six hundred ninety".