931604 has 6 divisors (see below), whose sum is σ = 1630314. Its totient is φ = 465800.

The previous prime is 931597. The next prime is 931621. The reversal of 931604 is 406139.

931604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 559504 + 372100 = 748^2 + 610^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 931604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116447 + ... + 116454.

It is an arithmetic number, because the mean of its divisors is an integer number (271719).

2⁹³¹⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

931604 is a deficient number, since it is larger than the sum of its proper divisors (698710).

931604 is a wasteful number, since it uses less digits than its factorization.

931604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232905 (or 232903 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 931604 is about 965.1963530806. The cubic root of 931604 is about 97.6660855395. Note that the first 3 decimals are identical.

It can be divided in two parts, 9 and 31604, that added together give a palindrome (31613).

The spelling of 931604 in words is "nine hundred thirty-one thousand, six hundred four".